Vodacom your systems of returns stink

I have been trying to resolve an issue from February with Vodacom I received a package which i did not agree on and tried to return it . They have records of the request however they have failed to pick up the parcel to date 25-07-2024 I have been paying for something which i dont want and every time i call in they promise for the parcel to be picked up Today i called in again and they say its with the investigate dept and i am given a number which does not go through How long is this gonna go on and my money been taken. I requested that i take it to a Voda com shop and they can pick it up there however i haver been denied that option so now what does one do cause i feel like am been held hostage t be keep on paying for something which was not agreed on.