I have tried to buy a game on the vr headset and it keeps on coming up unable to process please use another card.
Have used it for a while and never had this problem before anybody can help please
That sounds far more likely to be a problem with your credit/debit card than with your headset.
Check that you've got funds available and that the card hasn't expired.
Also log into your bank (or credit card) account to see if there are any messages pending. (Your card provider might have required additional verification from you before allowing the purchase to go through).
If everything seems to be in order, phone the card provider's helpline about your problem.