PENDING CLAIM HORROR!!

I am extremely disappointed and frustrated with Innovation Group. My car has a timing belt failure. My claim is pending because Innovation Group is just being ridiculous with their demands. I have been paying them for quite some time now and they never told me that, for me to claim they will demand ridiculous things. I provided them with a stamped service invoice, and vehicle purchase documents, now they say they want proof of payment - for timing belt replacement. I told them that i dont have it, as i have switched banks more than thrice. Innovation Group is making it my fault and trying every possible way not to pay/approve my claim. This is very ridiculous. They wanted proof that my car was serviced for them to proceed with the claim, then car purchase docs. I provided them with all the required documents. Now they are coming with other tricks. Since they don't want to approve my claim, they must pay back all my premiums that they deducted since the warranty policy started then we part ways amicably. I am done calling them, this back and forth communication is so stressful and draining.