No customer service- Slow Line Connection

My fibre line has the tendency to drop to 93mbs on a regular basis. Not only does it drop there are also packet losses from 3%-10% which makes the line unstable.I have reported the numerous times and till today nobody has been able to resolve the reduction in speed or service. Neither Vuma nor Home Connect has the ability to resolve this. They however take my money every month. The support is not at all up to standard and their most famous saying is that it is escalated. I am just another number in their system. I have spend so much money phoning them that it it is becoming ridiculous and not including the time spend trying to sort out the problem. They where like all SP quick to connect one but resolving issues they fall far behind.