Sumsung J6 dual sim

I have a Samsung Galaxy J6 dual sim black device. I lost my phone 24 June 2020 and called in to blacklist it in order me me to claim for my phone. Ever since I have been calling and sending emails to C insurance, Cell C store and customer service following up on my case. They always have a different excuse or they just don't respond. 2 weeks ago I wrote a review here on Hello Peter about the service that im getting from Cell C and someone called me back 3 days later telling me she's working on my case trying to sort it out and will call me back Monday 14 September 2020 - I am still waiting on that call coz it never happened. I went into Cell C store again over the weekend 12 September 2020 to find out just how far my case is and was told that my phone isn't blacklisted and that customer care blacklisted the incorrect device which I queried with them as it wasn't the same imei number that was on my claim form. My contract is about to end in about a months time and I feel that Cell C isn't doing much to assist me and they not sorting out the situation as this is an internal error. Everyone I deal with a new person and have to explain my story over but getting absolutely no where. This has been going on for almost 3 months now and I'm totally disgusted with Cell C - I won't recommend anyone to user this network...