******** increment of subscription beyond Contracted agreement without increasing benefits

Cell C now robs increases subscriptions beyond the Contracted agreement, that is very wrong, a written contract indicates what the value of the device is at time of contract and it can't increase because that's the agreement amount and the amount of data you and airtime you get for the duration of the contract, therefore increasing subscription without increasing benefits it's ********* and unfair business practices.it can't be fair, I lost trust in them . Their response is just arrogance