USFidelis Tier One Warranty have not paid claim - going back and forth since Oct 2010 Houston, Texas

I bought this insurance as security on a used vehicle.  Around September the transmission went on the 1995 Lexus ES300.  I am on disability and this put me in financial straits.  This company has still not paid my claim.  First my mechanic contacted them.  And, since I had paid the bill by that time, they said I needed to contact them, not him.  One excuse after another.  They indicated he never did, which was a lie.  Now since January I have been in touch with them.  They always  want something else.  They were provided with a paid invoice from the mechanic.  They indicated anyone could sign it and say it was paid. They wanted a "cash register" receipt who has those,,,the supermarket.  So I suggested I get it notarized and my mechanic faxed that to them.on March 10 or 11.  Now, they are claiming that they called my mechanic 7 times and he did not return their call.  They needed to verify that he was paid.  It is one excuse after another. That is a lie; because although the mechanic himself does not return calls ( he would get no work done) his wife does,,,religiously....

I am on the verge of eviction; have a heart condition and these people are going to give me another heart attack. 

Do not, I repeat do no use this company or anyone associated with them under any circumstances at all...