Has anyone had to deal with Microsoft customer support?

[nzoomed]

There doesnt even appear to be any support other than their AI answer phone that basically responds that we cant help you with your query.
I was having to sort out an account issue where someone was overcharged for office 365, in the end I sorted it out myself and turned out that the user had purchased a second subscription with a completley different microsoft account that I had to try and dig up from a multitude of email addresses, then reset the forgotten password.
Too bad if they were locked out of the account.