Bad Customer Service

Vodacom is not keeping up with there contracts. I have signed up for a 24 months contract so that means they can't increase the price like they are doing now. I tried to phone customer care was holding on for 35 minutes and my call was dropped, phone again and holds for 45 minutes but no consultant answer the phone you just have to listen to a song that plays over and over (irritates the hell out of me) So what am I suppose to do!! If they want to increase there prices they have to cancel the contracts or fix an earlier date for upgrade. They have to stick with there contract prices and they have to call a contract holder personal to inform them and gave the consumer the option of upgrading or cancellation before price increasing takes place. I'm shock that I have to hold on for 35 minutes and then again for 45 minutes. As a service provider they really can do with a call back service when they experience high volumes of call. All high volumes of calls is because they don't care about a consumer that signed a contract of 24 months. A contract are a contract and they have no right to increase prices in a contract period if not said in the contract. They breach their contract with us