I worked for this company and my former GM was leaving going to another store with the same company so I inform resignation, after I resign rumors was going around stating im not eligible for rehire i called the store just to confirm information which was

I worked for this company and my former GM was leaving going to another store with the same company so I inform resignation, after I resign rumors was going around stating im not eligible for rehire i called the store just to confirm information which was true by the New GM and she explained yes I don't understand because i never worked with her at all she explain that the former GM told her that but the former GM whom i have worked for are asking me to work for her at her new store and have stated she never told her nothing such is that considered slandering me name and what should i do?