What a complete shambles informed my credit card c...

What a complete shambles informed my credit card company they will be doing a charge back. Also fsa in the morning. Opened a policy 2 weeks later get a email saying there is a discrepancy. They will pick at absolutely anything to cancel your policy with my policy it was my mileage did 12000 last year and i put down 11000 !!! The year is not over only been 2 weeks so how do they know what i will be doing this year!!!! Avoid they took my money and you cant get through !!!