Black Friday upgrade

I app**** online to upgrade my contract on the 27th November 2020 for the Samsung A31 and smart watch, one of your black Friday deals. I have been asked to contact the online dept but the number I have been given doesn't seem to work. It says that an agent will be with me shortly but the call keeps getting cut. I have asked your customer service to escalate this for me but still no one has gotten back to me. The last communication I received was on the 15th December via sms saying that you are waiting on stock. It's been more than a month since I have app**** for the upgrade. Can I please get an answer regarding the upgrade? The service has been poor and making me question whether I should stay a client of MTN.