Ripoff

Borrowed $2600 from CashCall 3 years ago made my scheduled payment to them for 2 1/2 years and then lost my job.  I have made several payments to them since. I have paid them over $6000 on a $2600 loan.  They are advising that I still owe $2000.  How will I ever pay this lan off.  A $4000 profit is pretty good.  I offered to settle the loan with my last $400, but didn't even get a return call to tell me they would not accept my offer.  I have had many hours of lost sleep, this company sucks!