Painful contract upgrade process with MTN

I app**** for an upgrade to my contract online on Friday 23 July. I received an order number in response, but I had no feedback about whether the upgrade was approved or rejected; meanwhile, MTN claims delivery of upgrade devices in 1-3 working days!

Three days later I unfortunately missed a call on my cell phone. I tried phoning back but the number stayed engaged. Later I received an SMS to inform me that DSV had been trying to phone me and that I must contact them (another number was given) to arrange the delivery of my device. I phoned back as instructed and supp**** them with the reference number given in the SMS, but the consultant informed me that they were not able to assist and whoever had phoned before would probably phone on my cell phone again.

I haven't had any feedback or contact since, other than an SMS this morning to inform me that my contract has expired and that the contract fee would be changing from R569.00 to R2033.92. This increase is absolutely ludicrous!

If this is how MTN treats customers, I would rather like to cancel my contract right now.