Charged for an account that was never active

I ordered a contract online from vodacom I received my devices and lost my job 1 day after so there was no money in my account for them to debit so they cancelled it even before it was active they then sent RAM to collect the devices from my ex work place while I was not there so i do not have a copy of the waybill for the collection <br> <br> I then called vodacom to make sure the devices was received and they did confirm that it was received (they can pull voice logs I am sure ) now they have handed my account over for collection and black listed me <br> I called the call center and they could not help me at all can someone please help me on this<br> <br> I have also never received an account to be paid from them