Continued very bad service and incorrect orders

I have complained about the Meyersdal franchise on numerous occasions and NOTHING changes. I bought lunch there today. First, I had to wait while the employee assisted the lady in front of me, but then walked away to pack orders and chat to people in the back. I check to see if there are people waiting for their orders (in which case I would not have minded the waiting), but there were nobody. I had to wait quite a bit before he bothered to saunter close and assist me. When I complained about the bad service, he had the audacity to tell me he was packing for people waiting for their order and that they were there first. I said to him if customers are not actually there waiting for their order, then customers waiting to still order should get priority and he should have assisted instead of him standing there, packing and chatting to colleagues. I had to repeat my order numerous times as he was obviously not interested in listening, e.g. I ordered a cheeseburger with chips, but he then asked me if I want cheese. I also had to repeat the flavour more than once. Despite the bad service, after I’ve paid, I still said thank you, but he just looked at me (probably too annoyed that I dared speak up about the bad service). I had to tell him “I said thank you and the least you can do is say thank you back” before he mumbled something. As if that was not enough, when I collected my order, there was no chips. According to the lady, that was what was on the order (despite the fact that I had to repeat my order more than once and he ultimately repeated the correct order back to me). I think he did it out of spite as I dared to speak up as there is no way he could have missed the “Chips” order after me having to repeat is so many times and me saying “that is why I ordered a cheeseburger AND chips”. When I told the lady the order was wrong, instead of just assisting and sorting it out, she just shouted at him to come to the front (more than once without anything happening) – so I just left as they have wasted enough of my time with their bad service. I did not even bother to complain to manager or head office as nothing changes. I put them on Hello Peter before – got one supposed call from them to supposedly sort it out, but when I did not answer as I was in meeting, they did not bother to ever call back again – that is NOT service. Also empty promises – the one time they got my order wring (one of many times), I was promised I will get the correct food delivered the next fay – I am still waiting. As I said – nothing changes and I don’t think I will ever order from them again.