Vodacom Dissapointing

I had Upgraded at Vodacom shop In George on the 30/12/19 and the phone gave me problems the following day by switching off and restarting by its self while I am busy on it. So I had taken it to the Vodacom repair shop in the garden route mall in George and the said I must do a sim swap which I did with NO success. Then I wanted to take it back to the shop but could not due to work responsibilities . I could only take it this Wednesday 08/01/2020 and they told me they need to book it in because it was past the 7 days out of box guarantee which I understand. then I tried calling them and their phone stays offline. had to go off work to go and follow up on the progress. They then told me they are waiting for a part to come which is on back order. They then said that I would be without a phone until its done and they cannot give me a timeline. all they said was maybe next week but it might be longer. So I called the call centre and they put me through to repairs and they said the turn around time is 3 -4 weeks. So that means I will be without a phone for an indefinite time and that the phone will be in repairs for longer than what I have had it. I am not happy at all about this at least they could have said that because the phone is only a week and a half old that they would replace my phone with a new one. I have sent a few email to addresses that was given to me but not one of them work. Vodacom has disappointed me a lot