****** of money /unpaid claim

This medical company is pathetic to say the least. I have my whole family on my policy which makes 6 members in total. They have been happy Debiting R2700 each month from my account. Sometimes double the amount. They do not call back each time I send a mail and never have they confirmed and changed to debit orders.They make decisions and do as they please. I have been to the doctor once in the last 6 months. My daughter visited the doctor for the first time in May, only to have the doctors room call me to come and pay R500 because .I am positive you have taken at least 10k from me in debits. I want my policy canceled immediately and the least you can do is pay the bill. I feel ripped of and very disappointed. I will not leave this as is.