Taking money and no feedback as promised

Lets just say, Discovery has no problem taking money out of your account. Then when you enquire they say that management will call you back before COB. 2 days later no call. Utterly dissapointed , I was one of the first Discovery bank clients to sign up and have several accounts with Discovery but lately service has been less than acceptable. I Believe taking funds from my account is *****ulent, However they cover themselves in the T&C's saying that they can do so with prior notice. But no evidence can be given that I was timeously informed.