I just recently was sent my paperwork back also. I had sent a check and the paperwork they requested by they sent it all back without an explanation.
I did find out there are records of my great grandmothers there and will also not give up.
I don't have the funds to go thru a lawyer and long process but I too am determined. It is a shame that first people are told they can get the records and then they deny us them. The people at the court house that I spoke to were so rude and it took me 2 weeks of calling off and on to even be able to speak to anyone. VERY frustrating.