Customer Service is Deteriorating

I never thought I would find myself writing such a bad review about miway, but their Customer service has deteriorated over the years, they used to be the best insurance, they always made sure they made it very difficult for one to leave them as a client but now it's like they are making it easy. So here's the story. First 2 years back they took a full year to settle my mother's claim and now they are robbing me as a client. Last month I added a new car on the 27th which only had 1 day pro-rata(~R64). Total amount ~R2100 + R64 = ~R2164 but they debited R3113, ~900 extra, I contacted more than 5 times telling them I needed the money as it was Good Friday but I guess they do as they wish and did not refund, I gave up eventually frustrated as they call back after 2 days and they used to call back immediately, even their message says you will receive a callback now, they should change it to 2 days. So basically they now debited ~R1700 which does not cover the whole ~R900, I guess it's a sign that it's time.