Very poor service from Virgin Money

I've been experiencing issues with my card all month. I've called multiple times and sent many emails but still am unable to purchase online. The problem is not merchant specific because my other cards work on these sites. It's only my VM CC which doesn't work. I've asked that my query be escalated to a senior member of the team to resolve but I have not heard from anyone all month.

I am currently looking to open other CC at other providers.

Sad as I've been a client for over 10years now.