Can a legal document be changed after it is signed
I purchased a LEMON from Hyndia of Tallahassee. All the paperwork that I signed and left with a copy of has a different lendors (Hyndia Finance) name on it. I received a bill from a different lendor. I just called them and they said that Hyndia had scratched out the other name and wrote in their name. I asked them to fax me a copy of the paperwork. My copy is not altered or scratched out in any way. Is this legal, do I have a leg to stand on in returning this LEMON.