Vodacom pathetic service!!!!!

I have a current fiber line through Vodacom. The package that I have is an uncapped bundle with line speed of 10 megs per second. My seeds have never reached above 8 megs per second on any given day at random tests done. To add insult to injury my line speed drops to 4 megs per second from 6:30pm to 11:30pm on a daily basis. Also there are frequent drops during the course of the day where random tests are done. When trying to contact Vodacom through their pathetic app nothing helps. Vodacom are quick to disconnect the minute you are a minute late to settle your bill yet are so pathetic at getting back to you with a complaint.