Disrespectful

I logged a complaint against picknpay last year November via Facebook. I bought rotten/expired hamburger buns at pick n pay ****arney mall I realized after I have I have ate 2 of them that they tasted really funny inside my mouth and I was infuriated please take note this has been going on for Months the communication is very poor and distasteful I can't even describe how terrible it is. So lately I got a letter from the head office and gift card worth R10 what really got me upset is that after months of trying to make follow ups this is thanks I get by them rewarding me 10 do I even worth 10? those hamburgers they not even that amount I find it very disgusting and humiliating the letter I got was not even an apology I could have been sick from eating that. I have a have always been a loyal customer for years and I don't deserve that and I refuse to be treated like that whoever is the person who's dealing with customer service queries on Facebook should be fired their service is worst I have experienced customer is core. I'm not accepting this latter and their gift card