Vodacom fibre

Lot of ******* is what they are. We pay for a 100 meg download vodacom fibre line and since we gave notice on discontinuing our line a week or so back, we all of a sudden have not more than 11 mb dowload speed and by times its down altogether. Reported it twice now and nothing is being done. So vodacom fibre is basically *****ing our money at the moment as we pay for a 100mb dowload speed which we are not recieving !