My question involves employment and labor law for the state of: TN

I signed a non-compete in TN @ one location then was promoted to another location (over 5 miles). I left and clients are wanting to follow me to my new place. My question is this:
My old company heard that clients were following me to my new business and sent me a copy of my non-compete threatening me. The non-compete was signed at my old location in which they had crossed out and put the latter location below without my approval. I did not sign nor initial this copy. They are sending out letters to clients stating that it would be a breach of non-compete if they do choose to follow me.

Is this preventing me from making a living in the eyes of the courts in TN? I appreciate any feedback on this.