Purchased Windows 10 but cannot install

On the 14 September 2015 I purchased Windows 10 Home online from [URL Removed] My computer froze & I had to reinstall all programs & systems. The only problem i have is with Microsoft as the USA support centre cannot assist you if you are outside the USA cause they can only work with purchases from the Microsoft Store USA. I was even told that i must purchase windows 8.1 and do an upgrade because they cannot assist me in activating the Windows 10. I was informed that I never purchased it from Microsoft and it must be an ******* copy. Had to forward them e-mail from Microsoft proving purchase. 4 hours on the phone yesterday with no activation. 2 hours today & when the technician realised he could not assist me he dropped the line. It is unfortunate that my company system cannot run on OS X or I would never touch Microsoft ever again. Also, they will not refund me