Had a very similar thread on a different forum, can't be arsed to write out another one lol:
The lazy call, really pisses me off. Some "Pro's" in the bigger games have introduced a habit that seems to becoming the norm (and for some reason accepted by dealers?). I first came across this dealing in an EPT in Barcelona and was amazed at the outcome.
Preflop Player A (UTG) raised all-in, Player B (UTG +1) says nothing and throws in 1 hundred chip, I was like WTF? player had a go at me and says obviously it is a call, and told me it was in the rules? Confident it wasn't I called the floor, and they backed the player up, saying if a player puts any chips into the pot following an all-in they are accepting the action. This is utter bollox btw
unless playing heads up (for the exact reason shown in the OP). Confirmed by the TD after I came off the table and queried.
Action follows action, if headphone man sees the player to his right throw a single chip in, he should be able to assume that the bet will be no larger than that chips value.
It actually takes less effort to just say "call" rather than flick a chip in and look like a knob.
If action is now on headphone man, he can now see the player to his immediate right has cards and no chips have gone in, he will now ask what the action is or at least check everyone elses action himself.
Ironically, if a player tries to match the call without saying anything and puts a number of chips that he thinks matches the call and makes a mistake (i.e. someone bets 95k and the action player puts 45k in and didn't see the 50k chip mixed in a lower value stack) then they have the option of making up to 95k or forfeiting the 45k.
In short, the dealer should be telling the chip flicker to say call (without any chips) or push the call over the line, so by the time it gets to headphone man he will know what is going on as would the rest of the table lol.
I am however a strong advocate of each player should follow the action, just think it is a real twatty move to put one chip in for a call in a multi way pot
Edit: the fact you flicked in one chip (as you say indicating a call) trying to get out of it is the angle, disgusting behaviour but in my rule book that would all you would have to put in. However if you flicked one chip in if I was dealing before I proceed to the next player I would be asking you WTF that was lol