Nedbank is not for the poeple

THIS HAS BEEN THE WORST EXPERIENCE EVER... nedbank has been the bank iv been using for many many years and always have been receiving my salary through them... Thursday 31st of may 2018 I got paid by my employer into my nedbank account and have a personal loan with this bank and they have been debiting R300 each month from my account but on the 31st of may, believe it or not they debited R3459 from my account and I spent the whole day at the branch in fox street trying to resolve this and have spoken to a few rude and unwilling to help agents from different departments of nedbank but the worst of them all has to be Steven Hazel Stevens from the NRR department who is a teamleader there and was adamant that theres nothing anyone can do to help and that I should just go home because this will not be resolved... my thing here is I get paid 5500pm and by them taking R3459 from me means I was only left with less then 2000 that needs to pay rent and food for my kids and transport to work and for my eldest daughter of which I couldn't do as the complaints department said they will resolves it by the next day which was yesterday, the 1st of june and to this point no one has contacted me or reversed the funds back into my account... nedbank is by far the worst bank for me now...my kids don't have food and I don't have transport money to work and the month just started and I haven't paid my rent... Someone please do help PLEASE!!!!!!!!!!!