Mayday
Following an in flight engine failure on a light twin and then a PAN call I was on approach to an airfield, the tower controler had already asked for radio silence on a number of occasions, as I reached my single engine committal height the landing clearance was blocked by another transmission so I was forced to go around.
At that point I made a Mayday call, this and other requests from the controler did not have any effect on those who clearly felt that without being able to talk on the radio the wings would fall off.
Eventually I made an ICAO non complying call of " you lot F£?!@ well shut up this is a F@&£!?£ emergency" .......... That seemed to work for a while but just as I was about to land another one asked if it was alright to speak now ?
The interesting thing to note was that all the transmissions during the emergency came from one flying club, the other club on the field and the private owners did not say a word.