Telkom and Mondo: Extremely bad service on the first time ever customer

Telkom and Mondo keeps on sending me from pillar to post regarding my cancellation which happened within the 7 days cooling off period. I spoke to almost 6 different Telkom Consultants who seem to not know what they were talking about since they all gave me different answers on one question. One consultant even sent me to Telkom Direct branch in Eastgate, Johannesburg where I was sent back stating that the consultant who sent me to them did not know what they were doing. Now I am stuck with the device I don't want, the device that has never been used and which was cancelled within the 7 days cooling period.

The Mondo Customer Care Consultant sent me a mail stating that they wont cancel my contract because they have received my cancellation email late from the Telkom consultant. The question then would be:

1. Why was the cancellation letter that was drafted by Telkom to Mondo was late and why is it my problem because I cancelled in time? 2. Why the Telkom consultants were sending me from pillar to post. Don't they know the call center procedures or aren't they trained enough for this? 3. When is Telkom\Mondo going to pick up their device that was cancelled before it was even used and rightfully so, cancelled within the 7days cooling off period? 4. Why are Telkom consultants that are selling us products never give us options as this has led to where we are now?