Non-existent private client support

I recently upgraded my account from Platinum to Private, in the unfortunate belief that I will get improved service from my Private banker. <br> <br> Unfortunately, over the last 6 months I have probably only sent three substantial inquiries to her, apart from the standard \please change my address / contact details"emails.<br> <br> The last two inquiries have simply gone unanswered. I've left messages through the online banking platform without any luck. One the previous occasion"