Disgusting customer service, why the double standards??

I app**** for an account with Edgars and was told to bring in my contact because I said i was a tutor. I don't have a contract but explained that i get a specific amount monthly and even showed them bank statements. They said i needed a contract because i said i was a part time worker. So i explained that i am self employed and they said that i said i was a tutor and couldn't change it to self employed (which is complete nonsense because well... A tutot can very well be self employed i mean thats just common sense) so i went on to ask if a domestic worker applies they don't have contracts and was told they don't need contracts (and again i asked a domestic who earns much less than me doesn't need a contract however I with proper monthly pay slips, no extra expenses etc. Needs one and cannot open an account otherwise) and she was like you need a contract. First she refused to speak to me and when i asked to speak to her this is what she said. Edgars this clearly doesn't make sense at all, I mean i clearly have the income and you guys have seen it, but because of a change in job (technically not a change just wasn't understood by the *********** staff working with you guys). Honestly Edcon is already threading on thin ice, with staff like this (who don't have common sense and don't know that two things can actually mean the same thing in the English language (synonyms),) then you guys will go down pretty fast. I'm really disappointed at the terrible customer service.