MTN contract upgrade

I upgraded my contract with MTN and this is the 2nd time they are getting this wrong. I was offered the following: - Samsung 21+ - 240 anytime minutes - 1G data - Price R970 per month Instead I received.... Samsung S20 - 240 minutes (120 anytime and 120 mtn to mtn) - 1 G date (500mb anytime and 500 social) I have been calling MTN every 2nd day to correct this. I spoke to Nicolin Perumal on 19/02/2021 and he informed that he is cancelling the contract and the couriers will be collecting the device. he also promised that he will call me on Monday 22/02/2021 but up until today he has not contacted me. Every time I call, I am being transferred to different departments. Either they don't want to help, or they do not know what to do. When I asked to speak to manager no-one is available. Nicoline gave me a contact number and said that he can be reached on ***but he doesn’t even get to speak to someone. I need this device to be collected and my contract to be re-captured correctly IMMEDIATELY. The service I received from MTN is pathetic and no-one is contacting me regarding this.