Vodacom's shady way of business

So Vodacom offers you 400gb LTE data while your fibre is in roll out phase in your area. They however have no intention for you to use 400gb as they will throttle you till you blue in the face. I've logged a complaint more than a week ago that I only get around 0.25mbps LTE download speed for most of the day and when it does get better for around 20% of the day it would be around 1.75mbps and for around 5% of that day it would be more than 5mbps but never more than 7mbps. They have been giving me the run around for more than a week now but it's obvious they are stalling until my fibre does roll out. They are currently ignoring my Twitter dm as I've been waiting now for 3 days on a reply after they told me to "sit tight"