Total Disrespect and Disregard for Customers

I have been going back and forth now for over 2 months with Nandos, I am appalled at the level of customer service they give and had a very horrifying experience 2 months ago where I found a toothpick in my food, at the Menlyn Mall branch, after being totally disrespected by the manager KATE, and to then subsequently be promised a voucher by the Regional manager ANDREW, a voucher which never came, I put several complaints on this page to date still no reply or call, this voucher was given as a peace offering however they cant be bothered I put a report last week they rep**** on this site saying the are dealing with it but GUESS what no one called me now a week later, do me a favour don't reply to the site saying you are attending to it and then don't bother to call the customer back. I followed the right channels but that's now being abused, right now I feel like doing what everyone else is doing and putting a picture of the food on social media, I am really frustrated and it feels like Nandos does not care about their customers