Very unhappy and dissapointed customer

I am totally dissapointed with cell c service. I have blacklisted my phone on the 22 September 2021 and they told me they escalated my case to the back office I will receive a response withing 48 hours but nothing happened. I kept on calling to get an update and there was still no ITC and now I called again on the 06 October 2021 to get an update and the consultant told me that she will need to blacklist the phone again and I must wait again for 48 hours. This is totally frustrating when you have to make an insurance claim. I have both call references and I am totally not a happy customer currently. I have been using cell c for a while now but I am getting dissapointed with their customer service. Can I please get a response with my case being resolved.