Cartrack poor customer service

For the last month I have been trying to get my account sorted out with cartrack from be handed over to the attorney's and cancelling one vehicle and paying the outstanding balance till this date I have sent proof of payments screenshots on email still no response from them and I'm blocked from the app yet I don't owe them this is totally frustrating as not one person has responded to my emails to rectify this problem is this how customers get treated . Poor service