No delivery of promised upgrade

On the 8th of April I was contacted with regards to an upgrade of my Telkom services and was promised a new modem, more data and free unlimited landline calls. It has been two weeks and the call centres are always unavailable or there are no consultants. They say call in office hours and that is at 10am in the morning?<br> <br> My ref. no. is ***.<br> <br> Please assist!!!<br> <br> Thank you.