Forcing customers to upgrade they line....OR

I have a signed 2-year contract with Vodacom and on 2021-09-29 they phoned my wife and forced her to upgrade immediately because the contract we have is no longer available. She was bul**** and said she has no choice but to mygrade and pay more.This is absolutely outrageous to hear,how can they do something like this.They record everything and I would like to know who is this person that forced my wife to do this for her own benefit because she signed a new deal or is this how Vodacom is doing business.