Too much hassle to continue with upgrade

Summer mobile has caused me to abandon MTN just after they convinced me to upgrade my contract by simply not caring. After being very clear on the phone about the expected colour of the device, it arrives as promised but wrong colour. On the phone to summer mobile, I am told that they cannot guarantee a specific colour - if this was said during the sales pitch I would have ended the call. So now I have to return the device to a MTN owned store (not just any franchise, as I found out when I took it to one, wasting half an hour) and then hope that the bearded woman at MTN Wonderboom Junction isn't in a bad mood again, as she has a s***l on her that will turn anyone's day sour. So when the system fails, all effort falls to the customer and the agents could not care less whether you're happy. Anyway, long story short, I'll be returning the device and leaving MTN for good after this hassle. I should advise MTN to cut ties with Summer Mobile forthwith.