Jeez, there are 7.4 billion people in the world and you get in a hissy fit because 0.000000000094% didn't acknowledge you based on the point you were all cycling ?
What ever you do dont go to a super market and buy sausages, because other people there will also have sausages, the same as you ... And they arnt going to feel the need to acknowledge this ... Oooh look we both have sausages, lets wave at each other
Mind you, has it crossed your mind that maybe you are the problem not them ?? ... I mean there has to be reason why you are riding alone and no one wants to acknowledge you ? ... Perhaps it's time to look at yourself in that metaphorical mirror