Error when purchasing xbox developer mode.

Whenever i try to purchase developer mode it keeps saying something went wrong and when i try to contact support on the website because it gives me the option to do so whenever the error pops up it says i have to select a workplace but i am unable to do so as there are none for me to select. I know for sure it's not me typing my card details incorrectly because i've attempted to intentionally type the details incorrectly and it hasn't given me that message and i know for sure the card has enough money on it to make the purchase, in addition to this the card in question is not a prepaid gift card so it shouldn't have issues on that front so what could possibly be the issue and how could I potentially solve it.

:)