product suport AG

I took out a repair and support plan with team knowhow on 20/04/18, i cancelled it 12 after it was taken out, for a complete lack of service from the said team. there was no deposit paid therefore no need for a refund to be issued.. my bank statement showed up a payment being with held on my account for 9.99 and it showed up as product support AG or GA, the initial agreement was for 10 monthly payments of 7.50. when i eventually got speaking to someone from the said team know how they had not got a clue so i had to wait on a manager phoning me back. a line manager rang me EVENTUALLY and tried to tell me that it showed up as a debit because they were trying to issue a refund(one that did not have to be made). after speaking to my bank today(10/05/18) they confirmed that what that manager had told me was incorrect, it was showing as a debit and that a refund would NEVER show up that way and that they had tried to take money from my account. so not only did they try to take money from my account when the policy had been cancelled they tried to take the wrong amount and then had the nerve to lie about it. as a result of all of this i had to cancel my debit card and my bank are now keeping any eye out for this TEAM KNOWHOW, what a joke, more lie TEAM KNOW NOTHNG. DO NOT TRUST THESE PEOPLE OR ANYTHING THAT THEY SAY