New card for purchases won't register on my account

I'm pretty sure ive entered it correctly but ill certainly double check it all again, I mean, what have I got to lose? Haha. Appreciate your assistance, thanks again. Stay safe.

What about from your console?

Add a payment option

1. Press the Xbox button
   
   
   to open the guide.
2. Select System > Settings > Account >
   Payment & billing.
3. Select Add a payment option.
4. Choose a payment option, and then follow the instructions.

Update a payment option

1. Press the Xbox button
   
   
   to open the guide.
2. Select System > Settings > Account >
   Payment & billing.
3. In the box that contains your current payment option, select Edit info.
4. Update your payment option details, and then select Save.

Thanks for the suggestion mate but unfortunately,ive attempted just that already and with the current situation, customer service is struggling themselves, so wait time to receive assistance is staggering. Thanks again though.

Hello. verify that the card number is correct. usually there is usually no problem with the cards until the moment you make a purchase, which is when they check if the card is valid

Hi WannabeGeek1,

Try to update your payment method thru your Microsoft account
https://account.microsoft.com/billing/payments