Debiting my account with zero warning and without due cause.

My account was debited by standard bank insurance for my vehicle while I had active insurance for over 2 years with another insurer. I have submitted all the documentation requested, but I have yet to receive any feedback on the progress via email. I have also requested emails and copies of calls from standard bank requesting that I submit proof of insurance which standard bank claims they did prior to debiting my account. Please improve communication skills of your insurance group. Its a pity that one department is letting the whole Standard Bank group down.