Unhappy Client, Standard Bank taking money without my consent.

I have recently purchased a property. I had the necessary documents in place for building insurance at a third party insurer. I sent all the documentation to standard bank which then decided that I have to increase my building insurance to an awfully high amount before they cancelled my insurance with them. I requested that an assessor come to the property and evaluate what the replacement value will be. I requested Phumla Slaffa to contact me numerous times, which she had not done. Come the end of the month, no feedback was received and an insurance premium was deducted from my account. My insurance premium was also deducted from the third party insurer. I want my money back from standard bank, but even today, Phumla Slaffa is not assisting me.