Mtn is of no assistance!

It seems online ordering will never be up to par in this country. Yet again I'm faced with a delay in service delivery. On the 3rd of March I emailed Mtn to tell them there had been an error on the device I'd ordered on their website. Uncertain how the error occurred I explain in detail what device was on the paperwork and I screenshot and explained the device I was actually wanting. I in depth explained everything and patiently waited. Tuesday rolls around and DSV phones me to deliver a device and I said please don't deliver I won't be accepting as it is the incorrect device. Again I email Mtn, to no avail. Every single day I email asking for an update. I've had 3 responses,

1. The 4 March informing me that the online department needs to assist me.

2. The 6 March I got an email asking for my ID number which I duly shared.

3. Then last but not least the 12th of March telling me they referred my query to he relevant department and are awaiting feedback.

All I've asked in every single email is an update, are they able to change the device to the one I want instead of the incorrect one. But it's been 13 days and nobody can tell me what is happening or tell me if it's possible to switch devices. I am sitting with a situation where my phone broke hence why the application to get a new one and I cannot be without a phone due to work, I am loaning a back up phone which isn't ideal. If an update could be provided to me and I could receive my new device that would be fantastic! My patience has completely run out at this point, I can't wait almost 2 weeks for some kind of update or for the correct device to finally be sent to me!