Shockingly bad service

We went into the store at Greenacres shopping mall in Port Elizabeth. The consultant that "helped" us was rude and arrogant taking 10 minute long personal phone calls with his mother while I was sitting in front of him. We upgraded to a special they had with free headphones only to find out after signing the contract that he changed the contract to only the device without the headphones without our knowledge. Once we picked up on this error he said he would have to order the device with the headphones and it will take 2 weeks. After 2 weeks no one called, we had to drive 1 and half hours from Port Alfred just to follow up with them to find no one bothered to place the order. Leaving us with out a hand device and headphones. They simply told us this is not their problem they cant help us and we should cancel. Never in my life have i ever received such service from anyone before.