Unauthorised debit amount

These guys decide to take more money on my account than what was agreed upon without my authorisation. Disgusting to here that they somehow thought that I didnt have insurance for my vehicle. i have a number of vehicles and through different banks and this one is the only bank that consistantly annoys loyal clients with proof of insurance. i will submit that i have proof and I want my money back, and because of the fact that they breached my contract i am going to take this matter further and i hope other banks are reading because i need someone to settle all my wesbank accounts im done doing business with such a disrespectful bank