Contract intiated without consent

On 10.12.2017 it came to our attention that our cell phone lines have been suspended. On 11.12.2018 we went to a Vodacom shop and were told that we have an outstanding payment on a new contract that was initiated. Neither I nor my husband requested or approved this said contract. It is with great disgust that I say this 2017 has been a constant battle with Vodacom because of poor communication, lies told by call centre agents, wrong billing, back payments and then reverse payment and breach of contract by wanting to extend our old contract by more months due to poor service on Vodacoms side. When the last payment for the previous contract was made we made it clear to Vodacom that we no longer wish to do business with such a cheating, unprofessional and inadequate service provider. Yet show how I find myself trapped in a new contract with new outstanding payments. Vodacom you as a company suck and so do your employees and customer service. All I want and wish for Christmas this year is to cut all ties with Vodacom.