THREATENING SERVICE

I have been doing my CPD through FOH for the past 2 or 3 years. I no longer require their services; therefore, I cancelled it and followed up with another email to ensure it was cancelled. The lady emailed me back to indicate that it was successfully cancelled, and the amount was paid in full. However, this morning, I received an email from the accounts department with a lady enquiring about whether I had sent her proof of the cancellation. I forwarded the email, and she called me. During this call, she was not very kind; I said that it was an internal matter they needed to communicate on as I sorted it out from my side and was informed that it was successfully cancelled. I received a threatening email that I did not indicate I wanted to renew my service with them and that they would be handing me over for collection if I did not pay the amount. I received horrible service, and it was not handled professionally.