A deal involving gamepass that was said on there site did not work and i was charged the...

On the xbox website, it says that for a limited time, the price for 3 months of gamepass is 1$ and then afterwards, it will go back to the normal price. So i payed for it and instead of being charged 1$, i was charged the normal price. This is important
because i needed those few dollars and only signed up cause of the limited offer of a 1$ charge. If this issue cannot be resolved today, i will have to refund my purchase. Could someone help?

:)