Really bad service from American Express to a customer of 17 Years without a bad mark

I wanted to transfer my South African Account to the UK as we have moved so after working through a heap of computer generated Voice questions I eventually get a person on the line who promptly tells me that he cannot help me but I must make a new application. So I go onto the website and after a search only find that I must apply again so I complete the form only to have them come back in a few minutes to say my request had been declined. I then sent them an email and this is what I said. : I find that this is highly disappointing as I have been a customer of American Express in South Africa since 2003 with a revolving credit limit of R67 150.00 (£3 000.00) and a Credit Balance of R4 789.00 (£217.00). All that I wanted to do is to transfer the account to the UK yet you blankly refuse to do that by telling me that my application is refused." I must say their service or lack there of stinks.