Warranty not being honored. Support not responding.

I purchased an MR5200 from Netgear.com in 6/2022. Almost immediately started having issues. After troubleshooting with tech support, they said they will overnight a new one but required a credit card for the RMA. After trying multiple times with multiple debit/credit card numbers, their credit card web page keeps stating that my card details are invalid. No one at Netgear seems to know why, and that's when the customer support escalations began. Since then, I have had several cases escalated to customer support, none of which had been resolved or even responded to. I attempted to try to get a refund, tried to change the method of getting a replacement, etc. Every option available to me requires the involvement of this customer support department who refuses to respond to any of my cases. I am at my wits end...I have know idea how to move forward. I may have to try to get the original purchase disputed off, find out what options I can take elsewhere. I am a new customer to Netgear and I purchased one of their most expensive routers. I am amazed that they aren't interested in keeping me as a customer. 46360365, 46359241, 46359041, 46343317 - these are all of my current active case numbers. I have more that were closed for some reason, even though they were never resolved. I am very disappointed with this organization, and I am at the point where I believed I was taken advantage of. 

I'd ask for help from the community or a Netgear moderator, but in reading other entries, I'm not sure there is any help. Let me know if there is any solution, or if you think I was ripped off.