Appalling service Vodacom Fibre

I have been having problems with my fibre for the past 3 months. I have called Vodacom numerous times regarding the problem without any success. I have spoken to at least 15 agents all *********** of resolving this issue. I have left six messages for a manager to contact me still no reply. On the 27th of January I emailed the team leader Nicole for assistance. Guess what after three mails still no response!!!! Today 28th of January I phoned yet again three times, still no response. What must I do to get Vodacom to sort out this problem!!! A service which I am paying for each month that is not fully operational. Appalling service Vodacom