Poor Service

On the 30/11/2020 a lady (Adam) from Vodacom called me and offered me a new cellphone contract for Huawei Y6p and she told me that my monthly installment is going to be R269 on the 02/12/2020 I called Vodacom and told them that I want to cancel the new contract as MTN offered me a better option and less installment I was told that it was cancelled and they will send a courier company to fetch it, since then I waited for the courier company but nothing ,now I receive a statement from Vodacom they billed me R386 for a cellphone that I didn’t active I want Vodacom to come and collect their phone and cancel the contract with immediate effect