Vodacom data disappearing can't believe it!

Vodacom, you are taking my data again!! In December I signed up for LTE wireless Internet with 100 gig daytime data per month and 100 gig night owl data. Well on the 18th of the month I have been informed that my data has run out. Horrific! My account was checked and it was found that there was no irregular usage. I am completely dissatisfied with this and have been told that in order to cancel my contract I will have to settle the account for the balance of the contract. In other words, I will have to pay for 21 months remaining on the contract. This is so unfair. They cannot upgrade my data to a larger package, and I cannot get out of the existing contract so I am completely at their mercy. I am so sorry that I didn't get uncapped fibre from a different company, because Vodacom are so *********. I have had data dissappear before and I should have realised that Vodacom are never interested in coming to the party and are really bad at looking after their customers. I have had contracts with them since 1995 and there is no reciprocal loyalty from them. My sincere advice to all who read this is DON'T TAKE ANY CONTRACTS WITH VODACOM. If you need Internet access, go fibre. 100 gigs in 2 weeks! *******.