Online Payment Processed Twice in MYOB

Hi, 

I have an online payment from a customer that was processed and applied twice in MYOB, leaving the invoices in credit by the invoice amount. Both payments were sitting on the undeposited funds listing which I recorded (hoping it would help)

I have tried to reverse this allocation and delete the payment, but at the end it all goes back to how it was in the beginning. (double payment against invoice)

This transaction only appears once in the transaction listing in the MYOB 'online payments' listing.

The payment was received into our bank account only once, but there is no transaction on the Bank Reconciliation for this value. 

Your help would be appreciated.