Money gone

I had a MTN and a Vodacom contract with Nashua. December I paid both my accounts. The amount was paid into their bank account. Now both the networks (MTN and Vodacom) says my account is in arrears. I did pay the money. I am not going to pay again. I do have proof of payment! I did mail Nashua, but no response. I am really unhappy about the service. They must pay my money to the networks! It is money that I can't afford to lose! <div><br></div><div><em>(Supplier name changed from Nashua Communications to Nashua Mobile by Hellopeter.com)</em></div>