Freezing of bank account because of a statement

I am utterly disgusted with the way Standard Bank went on to freeze my parents business account because of a statement that they need to verify that the business belongs to my dad. My dad took the Amathola Water statement of which they rejected stating they need one from Mnquma Municipality - we got that and they rejected it saying the address is incorrect as if its our fault. Its been months now with the account frozen and trying to get anything from the Municipality is a mission as the people at finance are always not there or their telephone lines are not working. I received the statement via email today after months requesting it from the Municipality and if this one is rejected my parents are closing their account and moving it to other banks. Standard bank is not only the bank and my parents being pensioners I don't know how they think they will survive with the account frozen.