Unable to Contact Call Centre

I logged a ticket to have a change made to my ADSL account on the 13/05/2015 and it has still not been effected. I have tried contacting the call centre multiple times and have sat on hold for almost 2 hours!!! The 10210 number is only free from a Telkom line but when at work most individuals don't have access to a Telkom line! I want someone to call me back today and advise as to why the change has not been made after being assured that it would be done within 72 hours.