Very angry & Disappointed

im a very angry customer who had a bad experience with pick n pay. I bought a phone last year December and January it frozen and I took back to pick n pay and fixed it. august same story happen, October again, and when I went to fetch it , it only worked for a day and it froze again. I told them that I want another phone but they refused, they said it needs to be fixed.i spoke to the store manager and he said he will assist me but till today I don't have a phone. no one bothers to come and update me, I have to go pick n pay to ask what going on.i don't want that phone anymore. the service I got from pick n pay and their supply sucks, such a big retail store with such *********** and ********* people they have..... please assist me on this.