Private banking have downed tools

Have had a series of poor service. Summarised this in 3 points to private banker. He did nothing. Followed up with him, then sent of only 2 separate complaints. Do not know what these reference numbers refer to and to which point raised. Only one response received from these complaints after 10 days - and this response had nothing to do with my actual complaint. Followed up with private banker - ignored. Requested a change to private banker -ignored. Followed up with emails to complaints ref emails - ignored. Called complaints centre to escalate - nothing done. 10 days with 1 response and No resolution to any of my queries. Pathetic. Your system is broken.