These services try to save money by using AI in the support team and hiring fewer people, which results in a bad experience that ends up leading to long waits and duplicate responses. It seems that they do not want you to cancel the card, so stop using it and it will expire soon.
If you read some responses to similar problems, you will find that some of them were solved after more than 8 months.
https://www.reddit.com/r/Crypto_com/comments/182jht0/support_not_answering/

Pressure on Reddit about the support team's delay may force them to hire more, especially if they receive a lot of complaints.