Groceries Manager very rude

I took meat back to Checkers on Saturday because it was "vrot". This was the 3rd time that I bought meat from Checkers and it was "vrot". I did not keep my slip because I bought it a month before. He told me that the meat is already old and I don't have a slip. I told him that I buy meat for the whole month and freeze it. He did not want to give me other meat. He was really very, very rude and had a bad stinking attitude. He told me that I am wrong.