Incompitent staff not willing to help

I received bad service at cosmo city capitec branch, I went there on Wednesday which was the 6th of april to open a new bank account I took a proof of residence and they told me that it was not the right content for their system, went to another store to ask for a statement which has a proof of address they said its wrong again which one consultant said it was valid before seeing a consultant, I had to go back home and check for another proof of address took it to capitec again on friday the 8th and the lady told me that it was wrong a third time, I have never received such bad service staff are reading manuals while assisting customers they seemed like they don't know what they doing, so I really don't know what to do to open an account at capitec. They better pull up their socks when it comes to servicing new business.