Additional charges on account for services which I have not signed up for

Fnb is pathetic, imagine owning up to their mistake of taking money from me without me signing up for additional services and then choosing to give less then 10% of what they took back, this bank has a bunch of *********** unhelpful staff, after responding to their email they have not rep**** to me to date, it’s been over 2 weeks. I’ve been into the branch but the staff says it’s not a problem they can solve but agrees with me that I’ve been ****** by their bank. Fnb you are by far the worst! No reply’s, no phone calls, no solutions. All I got was we are sorry but here you go a piece of what we took! Take full responsibility and give me back my money!