Worst service ever

I went to Riverside Square pep to buy DSTV and when i got there when they scan the DSTV decoder with installation it was amounting to R699 and according to them it was suppose to cost R749 so they said to me they wont sell it to me there is something wrong with the system and i should come back maybe by Tomorrow then i decided to go to Diepsloot Pep where i got helped and i paid R699 because it is on special for 2 days so clearly people who works at Pep at RIverside they dont know about special