Sucks at customer service

The prestige manager was contacted on 15/12/2014 to raise concerns about the bank passing back dated debit order transactions on my prestige account. Funds get deposited on the day to cover and next day the debit order is returned as unpaid and charged R115.00. i contacted the prestige call center on numerous occasions regarding this and was told by them that the bank don't do this and yet i have proof the my company statement that this happens frequently (back dating).She took down my details and told me that she would contact me as soon as she got to the office. Come 12/01/2015 and still no response and fails to answer her calls or returns calls when messages are left. Eventually after tirelessly and numerous calls managed to get hold of Tracey again and was told the query would be passed on to complaints and somebody would get back to me. It's now 23/03 and still nothing, A bank that is quick to brag about how much they paid in interest but does not say how they ***** customers with bank charges that should not even be charged.