Standard bank lack of professionalism

Three months I have been complaining and Standard bank do not really care about addressing my complain. They are blatantly ignoring my complain. I will not stop until this is sorted. I was offered a personal loan over the phone by one of standard bank's consultant. I specified the time period I wanted to at back the loan (36 months) and I was offered interest rates etc. which I agreed to. My loan was approved and the money was paid into my account. Problems started when I asked to see my contract documents and this request was blatantly ignored. After a month of complaining through standard bank, I complained on Hello-peter platform. Only then Standard bank showed interest in my request. I received my contract documents after which did not reflect what I agreed to. The duration was 60 months instead of 36 months I clearly asked for (phone records will show this). All I'm asking from Standard bank is to have my contract documents reflecting 36 months I agreed to but they keep sending me documents showing 60 months. After communicating to two of their consultants (Dladla, Sthembiso SP) and (Khanyisile, Dlamini), nothing has been done. The monthly debit order still reflects 60 months period not 36 months period. I will not accept this kind of negligent and want my contract to reflect correct information and debit order. Standard bank is frustrating to work with. I wish they could just do what they suppose to do for their clients as a minimum.