MTN delivers wrong phone, delays cancelling contract and collecting phone

Took out a contract online and the consultant confirmed that the colour phone I wanted was in stock. When my phone was delivered it was the wrong colour. Apparently they couldn't do an exchange and it's now my problem to drive out and return the phone. Mtn Facebook tells me to take the phone to a MTN store to return, which I do, only to be told that they don't take in the phones, but to return it to MTN Direct. Spoke to a consultant from Mondo, who apparently ran the deal, and its confirmed that the fault is theirs for having cancelled the colour phone I wanted and ordering a different one without my consent. Consultant told me to go to a direct MTN store which is not the same as MTN Direct, which should receive the phone for returns. Phoned MTN head office and relayed the situation, and apart from being advised that I should rather just buy a phone cover in a colour that suits me since they gave me the wrong phone, the consultant confirmed that the contract would be cancelled and the device collected by DSV who would contact to arrange collection.

It's now over 2 weeks and DSV has not contacted me. I have taken out a subsequent contract with the phone in the colour I wanted, and have also found out that they have not cancelled that intial contract.

It is pathetic that MTN customer care is absolutely ***********. I have a string of emails requesting help, only to have customer care tag in others to request help without actually helping. I will not be paying a cent since the 10 day cooling period has expired despite my numerous attempts to cancel and have the device retrieved within that time.