There is a thread at WebmasterWorld named YSM Platinum Service - Not! It is kind of funny, it shows the tale of a company that has been trying to spend a "5 figure GBP sum" with them and he won't get a call back from the Platinum service representative.
I have counted 12 days of the customer waiting to have a real conversation with his representative. And it is not like the customer didn't try to reach the rep. He called, what looks to be, five times in the past 12 days.
This may be an isolated case but that is up for you to judge.
Forum discussion at WebmasterWorld.