Data contract proving to be a trick

Hi Vodacom Please explain why suddenly this renewed data contract is worthless, how am I losing 10 GB for 3 hours watching of Netflix, if I had known that this was just a trick for me to extend a worthless contract, because I know I normally lose about 4gb for the same amount of streaming suddenly on this renewed contract I'm losing double the amount of data, so what was the point, was it just to get money off of me because I'm regretting this now, and also to think it's my second month of getting this ******* i have bought extra data for the with the same amount that I pay for the contract- last month bc you ******* me and I'm honestly gonna write a nice email to ICASA, that I'm losing 10gb from 3 hours of Netflix which is abnormal there's no way you can even explain your way out of this one bc I was using Vodacom two months ago and charges were not this expensive there's no way I lost 10gb for 3 hours I normal lose about 4 GB or less, this is exactly why we opt for Fibre not this ******* of milking us for money and not provide anything