Cell C employees not knowing their work or Huawei and Cell C are just dysfunctional

I purchased a contract phone from Cell C, Huawei i12 in July and the phone only worked for about 2 weeks then it lost network. I therefore called Cell C customer care and they advised me to change the network to a Vodacom 4G. I did that and still the phone didn't want to work. This week on Tuesday (22nd/10/2024) I went to a cell c store, then i was advised to make a sim swap as my sim card is old for R115. I did as I was instructed and waited for over 3 hours before inserting the sim card back on the phone. After inserting the sim card on the phone it is still not working. Today tried calling Cell C again and they sent me to repair department and at the repair department I was told that they is nothing that they can assist me with if the issue is with network.

I therefore don't know who to go to because the customer care tells me that they cannot assist I have to be transferred to the repair department and the repair department also tells me that they also cannot assist i have to speak to customer care. The number in question is ***

I am so disappointed with Cell C. Could you please assist me urgently