MTN failing to cancel a contract for phones I don't have.

I opened a new contract (A***) with MTN and I received wrong devices on the 7th of June, 2021. I gave them a call and they advised me to return the devices on any nearest MTN store, I went same day to one of their stores in Menlyn to return the devices.

They took the devises, logged a cancellation and advised me to call MTN to follow up the cancellation after a week.

The following week I gave MTN a call to do the follow up, and I was told that the devices were received at their warehouse and the cancellation was logged. they gave me a reference number: RCO124896 and told me that I will receive an SMS in less than 7 days telling me that the cancellation is complete.

I received nothing until today, the contract is still active, I got debited and I don't have the devices or anything, I am just paying for nothing.

I gave them a call again last week, and they gave me another reference number: HBJVM0 and told me the same story, I am on a new week now and still, the contract is active and they are billing.

It takes few minutes for them to open a new contact, and forever to cancel it.