For your protection, the BBB advises you NOT TO SIGN BLANK CHEQUES. Your SIGNATURE is one of your most valued possessions. Your Bank Chequing Account Number and Bank Transit Number may be a target for Telemarketing misuse.
Automatic Bank Deduction systems are frequently used to pay regularly scheduled payments. To protect yourself you should never give out one of your blank cheques without clearly writing VOID on its face. It may also be advisable to punch a hole through one number of your account.
NEVER give out your Chequing Account Number & Bank Transit Number over the phone. It may be subject to misuse. Advise your bank IMMEDIATELY when you are cancelling any automatic bank deduction system. Do NOT rely on the other party.