Unsatisfied customer 😔

About a month back I went to the vodacom rosebank store to get an upgrade. I went there to get an OPPO. When I got there, the consultant showed me the latest Huawei y90 and they sold it me. I decided to go for it. The phone was new in the market and had no cover, so decided not to use it until the cover was available. Something told me to give it a try, because what if there's something wrong. Firstly my watsapp didn't function normally, I would be able to make one or two calls and receive calls. The next thing I can't make or receive calls,. Forcing me to restart the phone . The next day I took the phone to vodacom The Glen. They enabled everything on the phone, it worked just fine, but one I got home the same thing still happened. Made a video call, the video was so poor I looked like a cartoon character. I took the phone to the Glen three times. The following Tuesday I took it back to rosebank. They booked it in for repairs. A week later it came back with the same problem. Took it back only this time there's was a 3rd problem. When the phone is connected to Bluetooth in the car and I'm playing music from the phone with the volume all the way up, it sounded so low. The manager at rosebank told me that the phone will be changed. I never received any joy from this phone since day one and how do you keep on fixing something that's new. Vodacom repair told me there's nothing wrong with the phone. I've been sent from post to post with no help. I've been a loyal customer to vodacom for 27yrs. I need a new phone or else cancel my contract and don't penalize me for getting a malfunctioning device and for your *********** staff. My job number is ***1