Irritated client ***

Poor service I am getting from standard bank home loan is a complete nightmare. They **********ly remove me from my home loan joint account and change my debit order date which resulted in March debit order not going through. As if that's not enough they increased my debit order amount without by R1000 without notifying me though repo rate decreased twice early this year. When I asked the supervisor they told me this is due to my loan amount not reducing after 12 months therefore they have to increase it..which is ridiculous. Now my account is in arrears and they refuse to assist or reverse this mess even though they acknowledge that there was a technical error on their side. I lost all hope as I even escalated this to the manager and complaints department but no feedback or a simple call. When I called one of the numerous agent Zanele from the collection department told me they have to cut my call off because I am asking one question after other...and her supervisor Eunice Hanyane agreed with her and cut off my call as they struggled to answer my questions. This is depressing and I don't know what must I do to get help.