Arrogant poor service mentality

I tried communicating with Vodacom for the slow speed on my Fibre and they simply ignore my emails, i even attached a screen print of the speedtest to justify the slowness. I pay for 40mbps up and down and I was told by other service providers that is actually supposed to be fast yet, I do not seem to be benefitting for what i pay. The fact that is giant of a company simply ignores responding on emails is indicative of their big company mentality of "we do not care about you" attitude, it is shameful and insulting!