Worst personal/private banking service

I am a Prestige account holder that inquired about migrating over to Private banking and was submitted with documentation by the Private Banker assigned. 29 April 2020 - My documents were sent off and assessed, the Private Banker confirmed that i meet the qualifying criteria and will imitate my request on the 7th May. Since then no change has been made to my account, besides getting "we are still working on your request" from the banker only when I make a follow up. No updates were provided by the banker to keep me informed on any issues or delays until I make a query on the account status. 16 June 2020 - Still no change in my account status, No updates from private banker. Calls and Emails lead to no resolution. This is the worst possible customer service I have ever experienced.