JC Penney review: service from manager

I am a valued customer that shops in the jcpennys at The Wellington Green mall regularly, I always have such great customer service from all the employees I encounter with except for today. I receive booklets of coupons and emails for jcpennys and today when I tried to use one today the employee told me it could not be redeemed because it was already used today, when I have not shopped there today. When I asked for the manager to show her my coupon she refused to come and when she was walking by the employee flagged her down and she was so rude obnoxious and mean to me. When I was trying to explain my situation to her she had such horrible body language as well as an attitude and asked me if I needed her to write down her name or if she wanted to spell it out to me. I will never be coming back to this location ever again because of this manager Nathalie