Huawei Y7 2018 poor quality handset

Query contract number ********** 924. I purchased a phone and after a few days the phone stopped charging, I attended at vodacom and they checked and sent it away for testing and they gave me a new handset two weeks later. A few days thereafter I experienced that the signal kept disappearing and I had to continuously reboot the phone. I again took the phone to the store and now I have to wait another 14 working days. My account has been debited and I never had use of the phone as Vodacom had the phone longer than I did. I am at this point even prepared to take a more expensive phone as I value what I pay for. My family are all Huawei users and this is the first bad experience with vodacom. History will show how long I am a supporter of vodacom. I would appreciate your attention to this matter and a response in good time.