Terrible Service at Cartrack

I have experienced poor service with cartrack,I had a policy with them that expired more than a year ago and when I requested for a change In package the sales agent said she needs to get approval , she reverted a number of days later say I have been approved for the change but it will be a price reduction only no new unit.i refused saying what if the old unit breaks as I had already had it for more than 4 years she said she'll get back to me never did. I phoned and spoke to another person and told them I have been battling to change my package if i was not credited for the incorrect billing I will cancel as I had requested for a downgrade 2 months earlier ,no one got back to and I submitted a request on they website to have the cancel my contacts no one responded. I called and spoke to a lindileigh who was not helpful and told me I had to wait for a further 20 days to have my contact canceled, I asked how since I have been reaching out to cartrack but with not assist she said I should have tried hard to contact them.