On air tv are *********** and is ****ming me

I was called y a consultant to take out a explorer with on air tv which I did. When the decoder was delivered I noticed that someone else's name Surname and I'd number was on the invoice with my address. I called them to informed them . The decoder was collected by the courier company a few days ago. On Friday I received a call from on air. The lady said she will direct my call to their billing department because my banking details is under someo else's name. I do not understand why and how. I hold for a whole hour for the billing department to answer the call and delete my banking details from this person account because I will be paying dstv for someone else. Up untill today they did nit sort out their mess and I am worried that the debit order will go off be a use the person who phoned me kast Friday confirmed that my banking details are under someo else's name. Is this a **** because I will leave no stone unturned if I must be billed for someone else.