Con Men...

Con Men, I recently settled off my car after 4 years with west bank, I have always paid my accounts via eft monthly as i am self employed. I then bought a Motor bike recently and have requested them to cancel the debit order as i prefer to pay via eft as that way i can pay more than the minimum deposit amount and also as i am self employed i prefer to debate when i pay accounts for simple cash flow reasons. I have been told it is not possible to cancel the debit order and i must keep it for the duration of the contract. This has never been the cause in the past and i refuse to accept this.