Complaint Review: select portfolio servicing

I took out a mortgage with Equicredit in 2000.  It was then in the hands of Fairbanks and I paid off the mortgage finally in 2010.  I then found out it is now Select Portfolio Servicing.  I just went to check my title at my town hall and they never filed a release of mortgage!  I have made so many calls and sent so many letters and still no release of mortgage.  No one can find anything!  I was told that the two prior mortgage holders show no record of any payments and they have no idea who I am!

I am trying to sell my house and now forget it!  What am I suppose to do?  This company is sick!  I thought Equicredit was bad and then Fairbanks was a nightmare and now SPS is almost a scary joke.  What am I going to do????  Any advice would be greatly appreciated.  I do not have any old checks earlier than 2008.  This is frightening.