false salesman consulting consumers on the phoe

I am ncobile mdhuli and my I'd no *** , I did order sumthing on homechoice for the first time and I received a wrong order and I did call them and I was told to returned it to the post office and without them telling me I would be charged R154,80 in the post office for the return and I did call them again and querie of being charged and I was told they gonna refund me and I did received a call from their call centre consultant and I was tols they gonna put my refund on my parcel order the correct order but I didn't. Received it until now and I have dicided to pay R20 on my firts instalment cause they owed me R154,80 cause my instalment is R172,09 per month and now I'm receiving calls from their rude call centre they droped me when I'm explaining to them about my refund and I always receive calls day after day and they rudeness over their call centre droping and other one calls again and I told them I received from them and tell me I didn't get a call from them and after they droped me when I'm stil talking to them and they are rude to consumers and they give false information to consumers to get commision out of a sales and they don't give us correct order gain ,RUDENESS