Unfortunately, shidduchim is really tough. I have to say that I got married only a few short years ago and the difference in the way shidduchim are done are so different.
I have a number of friends who have never dated! i have some friends who are 22, 23 and have never been redt a shidduch! they have been on the market since 19! i dont know how old you are but my other friends who are 25 /26 and have only been on 3 dates since 19 years old, they would love to know that people are thinking of them! weather the shidduch is turned down or some other reason its stopped, they appreciate knowing that someone thought of them.
Try not to let it bother you. I know its upsetting and frustrating, but just be thankful that people are thinking of you.
May Hashem help you and all the others in this situation find their bashert quickly.