Bad and unwanted service

About 2 years ago Vodacom sent my wife a package with a cellphone and other devices in the package. We then ask Vodacom to come and collect the package. It took them months to come and collect the still unopened package. Since the day we received the package Vodacom started to debit my bank account with the amount they charge for the contracts of that was included in that package. We have never opened the package neither have we asked for the package to be delivered and we are still paying for the contracts. We went to Vodacom a few months ago and have asked them to please remove the contract from our names and to REFUND the moneys debited. a call was logged with Vodacom and my wife received SMS's to confirm the call being logged on that same day. Since today we have not heard from Vodacom and no one has contacted us in this regard. They owe me a refund as my wife does not earn a income and I am paying from my bank account for this.