Anybody having issue with contact's name not showing in call list on WP7??

A couple of days ago I realized something weird on my HD7. I notice there was a call I made which number I didn't recognized. I scroll down and saw more numbers with no contact's name on the list, and I kept scrolling down and same thing, no names only phone numbers for all the calls. Then I thought the problem was simple and could be solved by reseting the phone but after that the issue was still there. I made a new call and it did show the contact name but old calls only appears with numbers.

Also contacts that I pinned to the start menu disappeared and contacts that I linked before are now unlinked.

I have no idea what could have cause this, but I've already contacted @windowsphonesupport and the told me they've passed the issue to their team. I still waiting for them to reply and hope it's not a big deal or that it can be solved with the upcoming "NoDo" update.

Anybody having issue with contact's name not showing in call list on WP7??