7-Eleven review: Defamation of character

My fiancee and I have been going to our local store for as long as its been there and have always been good customers. In around April or May we entered the establishment and one of the clerks working atarted screaming at us to leave and we weren't allowed in the store anymore, that we were "on camera" for stealing crackers while a cop was there. Humiliated in front of a chunk of our neighborhood we left. It happened again when I was ourside the store waiting for a friend. First of all, I know the exact night the woman is talking about because it was the only time I BOUGHT crackers and there was a cop in the store. I PURCHASED crackers, (the only time I got crackers there ever)& my fiancee put crackers back on the shelf when he realized that I already had them at checkout. We since then havent returned to the store. I have never stolen anything in my life and now have to make sure I get to 1 other establishment by a certain time of night to make purchases. (I currently have no car) It was beyond embarrassing and my fiancee and I are wondering if we should take legal action on this woman.