Poor After Sales Customer Service

Discovery insure is the most expensive but yet unhelpful insurance company I have come across. I was quoted +R1500 for insurance on a brand new car and a year later they contact me to inform me that my premium is moving up +R1700, I contacted them to advise that I do not accept the raise and they continued to debit my account nonetheless. I have attempted to contact discovery insure on numerous occasions since then and each time, a representative of Discovery Insure, disconnects the call on me.