No Service No Debit

I am extremely disappointed in them. How can one be charged for a service they never received? I'm being blacklisted for stopping them from debiting my account because they never assisted me.

The last time I spoke to the consultant, I told her I was skeptical about using their service and therefore would get back to them once I had decided whether I wanted to use their services. A month later, I received an email stating that I needed to pay their fee because they tried to debit my account and couldn't access it due to my cancellation of the debit order.

I rep**** by explaining that I never used their services; I simply told the consultant I would get back to her once I had made a decision. I would like to understand how and why I am being blacklisted for a service I never received.