I need a lawyer from my area in Rocky Top,Tn. to take a case about a collection agency telling lies to my co signer who is my grandmother

A collection agency is telling lies to a family member who is taking care of another family member who is dying with stage 4 terminal cancer and these lies are making my family upset with me and causing family problems and if the family member dies they are dying thinking I said and done these lies to make them have to pay for the loan none of this is true and it's causing a lot of distress to all of us that is not needed. I really need to talk to a lawyer and explain everything other friends and family have said this is a law suit and I need to contact a lawyer.