Speaktruth, it sounds like you have had your share of bud-in-skees. People mean well but unfortunately have not learned the fine art of minding their own business. If someone finds you interesting and thinks they have a prospective shidduch for you (let’s just use you for an example) then it is perfectly fine to approach you and introduce themselves. However the first thing they should do is say “You are such a lovely girl, I found myself intrigued are you single I might have a shidduch for you, may I ask you a few questions?” If you are looking for a shidduch you can answer a few or actually sit down with the woman or just answer a few general questions and then say “My parents really handle my initial inquiries may I give you my mother’s number?”.
However, if someone starts in on you with negativity have some clever getaways in the ready such as: Look at your watch “OMG is it 2:00 already? Where has the time gone, I will be late for work, class, bus, train, etc….” or “So nice to see you again, I will give regards to my Mom, gotta go!”, “So sorry I can’t stay, I have a date at…..” “I have a makeover in 15 minutes and I can’t be late, gotta go!”.