Service not cancelled

On the 28 of February 2019, I've email your regional manager, Quinton (I will leave last name out), to cancel and organize collection of your fixed machine, as the handheld device was delivered. I've received confirmation email, that it will be sort it out. Scroll forward to the 10th of April, I receive invoice for March! For the device I've not used, which was supposed to be canceled. I've emailed Quinton on the 11th, to alert him, that the is a problem. He again assure me, that he will sort it out. Today, my account is debited. Please tell me, how not the get angry, that now, I've to spend extra time sorting this out?I was going switch my other business to you, but if this is the level of service you offer, I will have to reconsider. My account with you is BOL023 and I've all email correspondence regarding cancellation. I expect someone to contact me a sort it out. This is unacceptable.