Debit order issues

To whoever is responsible at discovery, I am truly tired of your billing issues. <br> Since I joined Discovery insurance, I have had issues with your billing.<br> I have had to follow up and call you guys when you are over charging me.<br> Initially I was told that there are issues with Billing because of system changes / upgrade but all was resolved.<br> Today Discovery insurance has deducted over R15000 from my account which is definitely wrong because my premiums are supposed to be as follows<br> Motor Vehicles<br> Item Premium Sum insured<br> Audi R 2,579.10 R 346,900.00<br> Mini Cooper R 2,075.71 R 205,900.00 <br> <br> I am genuinely not happy with discovery and i would you to know that i am cancelling my policy with you with immediate effect.