Fed up with inconsistency

Ive been trying to get cartrack to update my banking details or remove my debit order because its currently on a minus I've called in numerous times already. I was assured that it was done and to my suprise they sent debit orders on the 31/05/2018 even though I called in on the 11/05/2018. I'm trying to pay my account up to date and Cartrack is not helping me thanks to their numerous debit order requests. Ironically I pay my cartrack account on time and its even in advance. So for the last time please remove and update my payment method. And stop causing me to have ridiculous fees due to your incompetence.