Seagate Backup Plus Slim 2TB USB Hard Drive

I purchased this specifically because I wanted to use it on two separate computers , both running Windows 10. On December 25, I copied my files from my last external hard drive to the Seagate, and then began using it as my storage drive for all my working files. For two weeks, it worked great except for one problem - I could never get it to eject. Every time I tried to eject it, I was told that the drive was still in use, even though all my programs were off and the light on the hard drive was off. After two weeks, I decided to work on my Surface Pro 4 so I removed the USB connection from my other computer, which was off. My Surface Pro did not recognize the hard drive and I could not access anything. I powered down the Surface Pro and tried to open my files on my original computer. That computer suddenly said that access to the external hard drive was denied, and it also switched port names from H to I - meaning that somehow it no longer recognized H as being an available/active port. Now I could not access my files on either computer. I was very upset as I had my last two weeks of graphic design work on the hard drive. My husband tried to access the files on his computer, which runs Windows 7. We were able to see the files, but could not access them. Unfortunately, it was the weekend and, guess what? SEAGATE SUPPORT IS NOT OPEN ON WEEKENDS - which is totally ridiculous because people should not have to wait two days to get help accessing their files. On Monday, I called Seagate support and for the next two hours, a support tech took over my computer. He finally was able to re-establish connection to my files, but he told me to copy them to another hard drive somewhere and then to re-format the Seagate hard drive, thereby wiping it clean, and re-using it. He said that the problem with the drive not ejecting was probably that back ground programs were still running. He had me shut down the "move files to the recycle bin" and instead have deleted files automatically permanently be deleted (so no chance to save them if you mistakenly delete). He said that the recycle bin working in the background could be why the drive could not be ejected and why I had to wait until the entire computer was turned off to remove the drive. While in my computer - via remote link - he checked all the permissions. I had full permissions to access the drive, so that wasn't the problem. He checked the ports and all were fine. The problem was with the Seagate. He told me that the hard drive was corrupt but that re-formatting it would fix it. He assured me that could use the hard drive on different computers. So, for the past week, I have been working using the drive, which seemed to be fine. Until I tried to eject it on Friday night to use on my Surface Pro. No go. Even after waiting an hour, it would not eject. So, I shut down the computer and waited. Later, I turned on the Surface Pro wtih the Seagate attached and, guess what? Access was denied. Not only that, but I could not even find reference to 90% of the files I had copied to it - nor to the new files I had created over the past week. Because we could see the files on my husband's Windows 7 computer, I took the Seagate to it. Unfortunately, it did not show any of the files either. AND BECAUSE SEAGATE SUPPORT IS CLOSED ON THE WEEKENDS, I had to resolve myself to wait until Monday morning to get help. I did write to Seagate - and got a very nice email back from their overseas support that said I should probably send the drive in for an exchange as obviously something is wrong with it. The email then went on to explain that I could ask Seagate to recover my lost files for me - FOR $550.00 plus a $40.00 access fee!!!! So I waited until Monday morning and called Seagate Support - and listened to a message that said basically, "Sorry, we're closed for the holiday (MLK Day). Call back tomorrow." Click. Absolutely the WORST customer support for any computer related company, IMO. Meanwhile, I went to Staples and spoke with their techs. They reassured me that Seagate makes good products (which I had believed) and agreed with the first Seagate tech support person I spoke with the first time the thing broke down that I had probably received a bad drive (a lemon). It is now Monday afternoon and I not only have not been able to work because I need the files I created last week, but I am afraid to install the new personal cloud storage on my home network I purchased because I don't want to change anything that might affect the Seagate - which I am hoping a service tech will be able to access tomorrow (3 days later) and save my work for me before I wipe the thing clean and send it back for a re-fund.