Hello. My name is ***** ***** I will be assisting you today.
This is a scam, do not call or give them your credit card information.
Close out of the window or do a hard shutdown if you have to. I would then run a virus scan to make sure nothing else is infected on your computer.
Download and run Malwareybtes here; http://malwarebytes.org
Checking in to see if you still need help with this issue, if so please reply at your convenience.