MTN bad customer service

I have upgraded My contract September\October 2019. The contract was two Sony phones and two bazooka speakers as part of a deal. I received the phones without speakers. After numerous visits to an MTN store, calls to 135 and mails to the business contact center I have had no response. I was finally advised by the MTN person at the store to log this complaint as he is currently dealing with a similar customer complaint. An individual only getting assistance after logging a Hellopeter. Pathetic service. Unable to assist Me through email, on the phone and even at the store so what are the options just to get some answers? What's worse is that one of the new phones doesn't switch on anymore and MTN staff informing Me that I might have cost incurred with a repair as they no longer stock Sony.