My credit card limit was 2500 dollars, they say I owe 7000 now. Do I have to pay this or can I fight it.

Let me see 2500 plus how many months over the limit fee, plus how many months of late fees, and how much in attorney fees and now court fees.

I can see where it can easily be 5000 and while 7000 is somewhat high, not really unrealistic.

There should be a break down of how and why. You can or should have tired to work out payments,