Bad service

I went to Rage in Maponya Mall to request a settlement letter on the 25th of November so I can settle my account, the cashiers there did not even understand what I was looking for cause they didn't bother listening to me, the other one said it was a paid up letter and I tried to explain but they just didn't want to listen until one of them grabbed my card and printed me the balance out, they wanted to show me that I didn't actually know what I was looking for, and they were so rude, I could tell from their argument with me that they were thinking that I'm trying to teach them their job, at the end one of them told the other to send a message via Skype or something so they can request what I needed and again my card was grabbed so she can check the details, up until today I never received the settlement letter, on the 3rd of December I went to the shop again, it was so full and I asked the lady who was at the door sanitizing customers for the call center numbers, she rudely directed me to get them from the cashiers, again I had to go back as it was during my lunch break, I'm very disappointed.