Booking.com complaint: Undermine!!

I had reserved a hotel room in Oaxaca, Mexico, at Hotel Marques Del Valle back in Nov.27 2021. And how is it that booking, com email me to inform me that my reservation was cancels, due to my credit card being invalid, which i know that is not true. I called booking .com and was informed that my card is not valid, which i then said again, that is not true.!! So, i suggest i would give her another card, can she reinstate my reservation. She said No., she is unavailable to do that. That i would have to book it again.!! My original payment was approx.$603, when i first booked it back in Nov, and now is going to be $768.00. Why should I have to pay more, since i reserve it back in Nov2021, to get a less expensive price and for your failure to notify me within reasonable time so i could have made other arrangements., now i have to pay a higher price? And i am due to arrive 11Marh.2022. Why the last minute cancelation without any prior notice.. I am totally perturb over this situation, due that is so close to my departure . And i had no choice but to rebook it again at a higher price.. That really makes me ill.