MTN takes your money but fails to deliver the requested service

I app**** for an MTN data contract online on 9 June 2021, and although the process of applying and delivery was quick and easy, the contract recommended to me was not what I asked the sales person for. I needed a data sim for my cellphone and was sold a business broadband LTE sim that required a router. I contacted MTN on 22 June after I struggled to access the internet and was then told that the contract I was signed up for was not what I asked for. I requested immediate cancellation of the contract in question and received the following reference number #***.

On 16 July 2021 I received an invoice and statement from MTN after which I again contacted them about the contract cancelation, and received another reference number #***.

This morning 27 July 2021, my account was debited for the invoiced amount after the sales department was asked to cancel the contract TWICE in a 24 day period.

I expect this contract to be cancelled immediately and my money refunded.