Circle K complaint: unprofessional workers!!!!!

I go to circle k everyday have been for the past couple of years now and have never had a problem with any of the workers there until this Rude very loud mouth lady named Roxanne started working there at circle k I didn’t know the workers were allowed to do drugs in the public restroom there at circle k …… well that’s exactly y this employee started being rude to me BECAUSE I caught her sniffing drugs off the restroom toilet seat gross!!!! very unprofessional with that being said I went to go buy a drink for my daughter and was told by the g. m Diane that I wasn’t allowed in the store anymore she couldn’t give me a reason why so apparently I’m kicked out of the store now all Because I decided to do the right thing and talk to the g. m about what I caught her employee doing in the restroom well ikno the only way to get kicked out of the store is if your caught stealing and being rude with the employees and I haven’t done either or for that matter so who do I talk to about this situation so I can start going to my store again and not across old persal Rd just to go to a different store all becus I wanted to let the manager know what was going on in hr store..,…????