***********, clueless employees in store

I have had endless problems with my new contract. In store they are so quick to make a sale but are completely clueless when you have any query. Even the call centre staff are unwilling to go the extra mile to help you. With my new contract, I get no service when I travel to certain places. With my previous contract, that was never an issue because it always roamed onto the MTN network whereas this sim card just wouldn't do that. I went to query in store but they couldn't help me at all. I feel I know more than what they do yet they work there. How do you sell products that you know nothing about?! All they did was repeatedly tell me about data roaming which needs no explanation to me and that I have to phone customer care cause they know nothing about the technical side (Yet it turned out to be no technical issue!) Even phoning the call centre up to 4 times was a nightmare because they repeatedly give you troubleshooting steps that you tell them you have already done. They are unwilling to find the root of the problem or make any effort. I had to basically beg the consultant to specifically check my number because he was saying I should do a SIM swap as my sim card could be faulty, but I didn't want to go to all that effort if that wasn't the problem. Eventually he checked my number and said that this data plan only works in LTE areas and wasn't able to do anything to help me. So the SIM swap he insisted I have would have been absolutely useless!!! Now who do I go to to resolve this? Because they are all so damn ***********