Poor Fibre Service

It has now been almost a year trying to sort out my Fibre with Vodacom! I pay for a 100mbps line but at any given day or time only achieve 50mbps - if we're lucky. I have already lodged 3 service requests and every time I am asked to send them 3 screen shots of the speed measurements as proof etc etc etc. And then? Just silence! I am requesting Vodacom to sort this out ASAP! I am not taking screen shots again, sending mails, and don't get responses. You come and fix this or I will simply just cancel this service and take my business elsewhere. Besides, my account has being increased twice in a year, yet the service gets poorer and poorer! FIX IT NOW, or I will join your competitors that would jump to give customer satisfaction, at a cheaper price! I can get a 50mbps line (as this is what I receive anyway yet paying for 100mbps) at half the price I am paying Vodacom! So, the onus is on you to do something about this.

Thanking you in advance.