Extremely bad service from Senzo the Manager

I had such a bad experience with the shop and i would never buy anything from them ever again. Very unprofessional and rude Assistant Manager by the name of Senzo. I purchased a DVD player at cash crusaders Mega City (Umlazi)which was tested and worked. When I got home only to realize that the remote did not work and remembered that it was not tested upon purchasing only the DVD player was. I went back to the store after 5 days to report it not working and ask if I could exchange it for another one that they had even though it was more expensive then the one I had bought. They refused. I asked to speak to a manager and explained the situation and asked for an exchange and I did have the slip of which I explained that I might have not even taken it since it took forever to issue as they had a promotion where a customer get a cd/disk with every purchase and the cashier had an issue running the sale and didn't have time to wait that long ended up not even taking the gift and the both sraff members which was the cashier and the sales man remembered the incident. The person who was called said he was a manager Senzo of which i found out later that he is an assistant even though i asked him to get me a peson above him and stated that the bus stops with him, and he didn't wanna hear me out since i didn'thave the slip. He kept on saying if I was given my license back it means I should have the slip. I literally begged the man to assist and he didn't want to hear anything i was saying. I ended up leaving the shop without the DVD player since it was useless for me to take home if i cant play. In other words I donated my money to cash crusaders.