Eclipse charging after migration WARNING

I requested a MAC on 4 Nov 14 and migrated to PlusNet later that month.
They have continued to collect direct debits. Their justification is that PlusNet did not actually use the MAC so they had no way of knowing that I had moved. They have agreed to refund but it will take the system another month to issue the cheque. This just confirms that I was right to move away.

It took you a year to notice / cancel the redundant direct debit with your bank???

i moved and then cancelled the DD after they had confirmed that the account was clear, they wanted me to leave it open, so told them that they could send a cheque if it came to that