Telkom won't let me cancel my account!!!

Dishonest and terrible service. Was called by the sales team in October and was 'told' to upgrade my ADSL to an LTE router as the old ADSL router were being discontinued and were going to stop working. After I agreed they migrated my services to the router before it even came and it never did. The router in the house just stopped working immediately. After waiting an calling a million times for weeks with a million excuses about delivery faults or rica certificate faults, which they couldn't fix since it was their problem I decided to cancel the order only to be told I can't. After more than a month of no service, even though they made me pay, I decided to cancel my account and I can't do that as well because of the damned pending order. I can't get the router, neither can I cancel because they keep transferring me to different departments and agents. I'm sick and tired of playing their fool and I want my account cancelled and deposit back, so I can move to a better service and they won't let me.