Nashua mobile move to Autopage a nightmare

our contracts were moved from Nashua to Autopage. Our debit orders are erratic. A double debit one was actually in advance was deducted and when queried I was told I could not be refunded for the advance payment. Who deducts a whole month in advance for over a R1000 and then does not want to refund. Money does not grow on trees. We are not receiving detailed invoices of our usage. I am still waiting for a refund due to incorrect billing. I am extremely unhappy with our move to Autopage and as a consumer this is just not acceptable. I need someone to sort this out as a matter of urgency otherwise I would like the option to cancel both contracts due to breach of contract from the supplier. I emailed your accounts department on 3 March and I have not even had a reply. I even followed up on 23 March and still nothing. This is just unacceptable and not what we signed up for with Nashua. Our contract does not even have the correct phones registered. Please can someone respond to this as a matter of urgency.