RMB private banker useless

I was incorrectly charged for a service which according to the pricing brochure was supposed to be included in my bundled service fee structure. I reported this issue to my private banker 2 months ago and was told that the problem would be resolved by mid September. On follow up, they were apparently reporting the problem to management. Days later since last correspondence and still no feedback or reversal. I also sent an online request on the 5th October to my private banker to close one of my accounts and receive a system confirmation saying that I would receive a response within one business day. It is now 2 business days and no feedback and the account still has not been closed. This is not the only occurrence. RMB, kindly assign a different banker otherwise start closing my accounts. I'm not interested in paying an exorbitant fee every month for a private banker that doesn't address my queries promptly or provide feedback within the stipulated time frame.