Yes pk, Vanguard does make unannounced calls - in my case usually from a new "personal representative". But in the case of the op, it was communication via email.
Vanguard does offer a annual portfolio review to Admiral investors and probably to others. If the op is interested in a portfolio review, he/she can call Vanguard at the main number and make the arrangements.
To the op. The procedure is normally to fill out a questionnaire - and there is an initial phone call. Vanguard will then generate a report based on the questionnaire and initial phone call. There will then be a second scheduled phone call to discuss the report and any actions you wish to take.
I think an occasional review is useful, particularly for relatively new investors. Vanguard will "discourage" over-weighting sectors and should encourage simplicity. You clearly don't have to take the advice - and if any big changes are suggested, you can always get a second opinion at the Bogleheads. (at one time Vanguard was discouraging TIPS - and suggesting an actively managed fund called "Diversified Equity" - Bogleheads often didn't agree with these suggestions!)
My last review was about three years ago, and the suggested changes were minor. I won't be doing another one soon. I already know what they will suggest:
1. Get rid of the individual stock that I have in a taxable account
2. Consolidate the six
different bond funds I have in my IRA into Total Bond Market!
I think it is a worthwhile exercise, even if it just reinforces your belief that you have everything figured out.