Direct Debit Plus allows 'Originators', like the dreaded BT and / or others, to set up a DD without your signature on a piece of paper (mandate). Therefore they could i.e. it would be possible, to convince the Payers bank that you have signed up for or reactivated a direct debit.
I can't see how a DD if "reactivated unilaterally" by the originator could be seen in anything other than fraud - just as if your signature had been forged on a cheque!
The IPSO rules say your (Payers) Bank should repay you for DD's paid where the rules were not adhered to...
Of course that is easier said than done - especially as the majority of bankers either don't know or don’t like to implement the IPSO rules!
According to IPSO "[FONT="]you cannot have a direct debit on a credit card account. These are called ‘recurring transactions’ and are not covered under the Direct Debit Scheme Rules but come under the Credit Card Scheme Rules. You can check with your own credit card company on their rules[/FONT]".