BAD EXPERIENCE BUYING A PHONE FROM MR PRICE MOBILE

I bought a cellphone from Mr. Price online on the 26th of November 2020. The phone began giving me issues, the battery wouldn't last and the charger was faulty, made a terrible buzzing sound when plugged in. The phone also had sound issues where you cannot hear any sound. I took the phone back to Mr. Price Clearwater Mall and have been given the run around. The phone is R1000 yet they kept it behind for repairs. Now I'm being contacted by a lady by the name of Kgomotso that has advised me that they cannot repair the phone without me paying additional costs. According to her Mr. Price has a 1year warranty, whereas Hisense has a 2 year warranty. And Mr. Price is the supplier whom we bought the phone from. There processes make no sense. Who am I supposed to contact since I bought the phone from them.