Very dissapointed with FNB Insturance!

I am very disappointed. FNB debited twice the amount we had agreed on my monthly insurance. As this was my first installment, I am very worried about our relationship going forward. FNB was supposed to debit R1 255.27 on the 25th of October but instead they debited R2, 749.68 on the 27th of October. Not only was the debit late but it was more than twice the amount we agreed and stated on the Quote letter. I called FNB and the lady confirmed that indeed they did debit the above amount but doesn’t know why as she could not get hold of the lady who ‘commented’ on my quote, and she would get back to me on Monday (yesterday). I called again on Monday and a different consultant told me they only debited the R1 255.27 + 200 repo rate fee. This is strange as the lady told me they could see they debited R2, 749.68 but the other consultant is telling me they only see R1 255.27 + 200. I was asked to send an email to ***, which I and attached agreement documents. It’s the second day and I’m yet to get a reply. I’m already struggling to make ends meet and they do this??! Another R400 was debited by FNB because ‘#Item Paid No Funds 1 Ite Ms’, I mean ***! I’m clearly not affording to maintain the FNB lifestyle. With so much competition, It’s quite unfortunate that they treat their customers like this.