Vodacom

I as a customer of vodacom for many years have reached a point where I am very upset with vodacoms service. I took out a contract in 2018 = my gig 20 top up promo the monthly prescription was R319.72. Vodacom did not contact me to inform me that the monthly fee of R319.72 will go up to a ridiculous R1022.61!!!! Nor did Vodacom inform me that I cant just continue with the current contract as it is on the same price plan. Customers please check your statements this is ****************. I am awaiting feedback!!!