Standard bank (STL) deceased estates

Is there a way we can do a class action suit against STL? Standard bank deceased estate department is in shambles and they don’t know what they are doing and need to be stopped so other families no longer have to suffer the misery we are going through. 6 months since my mother passed and standard bank requires 30 days to reply to an email or they don’t at all. Our Estate officer Nonhlahla Mkhwa**** is basically heartless and clueless, her senior (****a Moerat) is worse doesn’t even bother. Both constantly on leave. While my mothers estate is not moving at all. I’m warning all families who have wills with Standard bank please please advise everyone to remove standard as the executor, remove them for your families sanity.