Bojangles complaint: REFUSED MY COUPON

Went to the Graham store this morning (March 3,2023) to get biscuits. Had a coupon, BOGO free.
Employee Shu-Portia just looked at me, never asked could I take your order, or for here,nothing. She just looked at me. I proceeded to order a ham, egg, cheese biscuit and 2 sausage biscuits. I told her
I had a coupon for a free biscuit. I handed it to her she just looked at it and told me I couldn’t use it. She was very very rude!
I asked why. She says her manager said that they aren’t accepting them today. I asked to see the manager and was told that she’s too busy. I waited for my order other people were getting theirs before me. I asked about my order she kept saying it wasn’t ready, but I could see the biscuit on the warmer. We have gone to this Bojangles many many times, but we will not go there again! This was store 000005.