Pathetic Service from MTN Mondo

I had pre-ordered a phone online over 7 weeks ago through Mtn BuyMondo. They phone me a week later. They then captured the incorrect device on the system, despite me clearly correcting the agent several times on the phone and they have acknowledged the mistake is on their side. They then advise I need to go through the entire cancellation process and resubmit, to go through the entire process again even though they were *********** and captured the incorrect information. Irrespective, I returned the incorrect device over 2 weeks go to an MTN store and they still have not cancelled the contract on their side. The value has been credited off my account today as they have not processed the cancellation on their side. I have spoken to several consultants(Noma who captured it incorrectly, Miranda, Noxolo, Jason/Vasigan) and the manager(Trisa) and still nothing! I phone in today and they still indicate the cancellation is in progress, almost 3 weeks later! How difficult is it for them to provide proper services to their client, despite them knowing it was their mistake? Everytime I phone in, they give me a different story and incorrect information and I am still waiting for the device that they and I contractually agreed to! They do not seem to care for their clients or providing a satisfactory service! Cannot believe the calibre of people hired these days, the processes and systems of companies these days as well as the complete disregard for the customer and their satisfaction in providing a service. Why bother providing a service in the first place!!!