FNB debt my account

On the 1st of May 2021, my account was debuted by outsurance. I had money in my account. The amount came back unpaid. on the 3rd FNB deducted R389 the amount of the insurance for outsurance. Outsurance send me a message to say they never received the amount of R389. FNB charge me R110 for unpaid fees, whereby the money disappeared out of my account. I would expect that they would charge me R8 - R50 maybe for it but R110 this is ridiculous . I am not happy about this. I spoke the banker via my chat messenger. Trying to resolve the matter. The banker couldn't tell me what happen to my R389 but only said that she will put in a request for the R110 to be reverse back to my account.