Worst service ever at Vodacom

Worst service I ever got Signed a new data contract, paid for new sim card, Vodacom deducted money from my bank account for new contract. And then desided that the contract is no longer available. If I still want a contract then I have to pay more monthly for less data. I refused so they just cancelled the contract. After several phone calls to there regional office no one have even phoned me back.