Mtn is the worst service I want my phone

If the was a half star was gonna rate you that, in 2018 after bringing my phone to MTN maponya the quotation was too much for a phone that went off on its own cool I asked for the phone not to be fixed even today I have never received my phone back been calling and going back to the store but they were telling me they don't have my phone yet, I got an email today that I can escalate to they are asking for IMEI you know how many times I have moved I don't have the ****en box but no they dont understand, so mtn store at maponya give me my phone back I will sure post all the conversations and all the responses I got from MTN at large on tik Tok and on every MTN social media page I Want my LG G4 beat