Cartrack they trash

They don't even deserve a star,I tried changing my account details with cartrack more than twice and paid them manually for this month they recieved the payment however my account is still debited.already my bank account is on a minus,I called them severally but their agents cut my calls as they can't resolve the matter.whats the use of having maual payment option if you know you won't allocate the funds accordingly as we use references when paying than messing our bank accounts?thier service is very bad customer service agents all they know is " but we already submitted debit order and we can't stop it as it's a computer" last time I checked computers are operated by human beings.