Fibre installation billed despite promise of it being free - logging disputes a futile exercise\

Despite being promised the Telkom fibre option where installation is free I have been charged an amount of R2376.32 for installation. I queried this more than 3 weeks ago and every time I call the call centre I get told a different story. The most ridiculous thing is that your call centre tells me to pay the amount and then they will get it sorted otherwise my line will be disconnected. I found your staff unprofessional and every time I'm told it will be escalated and their supervisor will call me but nothing happens. What irks me even more is that I still get text messages and calls offering me free installation - surely you should have on your system that I already have fibre. This has been one of the most frustrating processes to get fibre - first I struggled more than 2 months with Vumatel and now this. As soon as this contract is over I'm ready to go to another supplier.