I had a layover in Tallinn, Estonia on my way home from Vilnius in May, 2016
No one was at the service counter as I arrived. Only a phone and a note asking us to call for assistance. I picked up the phone, called the number provided, explained my situation. The lady said she would send someone over.
I was at Tallinn airport, on my way home from Vilnius. I had only received a boarding pass for my first flight when I checked in at Vilnius Airport, I had to pick up my boarding pass for my flight to Trondheim here in Tallinn. And there was no one at the service counter.