Frustrating unhelpful service

The customer service from Mondo is so frustrating to say the least. They called me to sell an upgrade on my MTN contract which I agreed to, it's been 2 and a half weeks and the device has still not been delivered to me even though their website says delivery takes 3 to 5 working days . Further to that every time I call to find out what the delay is they say they have escalated the issue and I should expect a call in the next 24 hours and I don't get any call backs ... they have done this to me twice already.The consultants don't even want to help they just want to get rid of you on the phone . Today I received an email to say that my order has been cancelled , yet I told them I am only enquiring how to cancel because the order is taking so long and will confirm cancellation once someone has called me back with feedback. Never dealing with them again !!!