I agree with Jax.
I use to always offer my help to people,former neighbors, where I use to live,then saw I was being used.
It hurts to have to say "no",but maybe gradually you can do this,and Jax made a good point,especially the rising cost of gas,amongst the other things that are putting a crunch on people's income(s).
The only person,I presently haven't been able to say "no" to is my mom,due to her poor health,dementia and other handicaps,but this too is getting out of control.
She is becoming too dependent (or lazy to use seniour transport system) and I am feeling so overwhelmed it's just unreal.
I need to learn to say "no" to many of her needs that she is still capable of doing herself,but I'm a sucker.
All I can say is to try it gradually,saying "no" to these people,I found the more I couldn't keep doing favors the less they started to ask of me,it helped.
If they start to whine that they can't afford this and that,tell them you are in a similar or same situation.
Heck,why should you have to be their support/transit system? You have your own life and struggles,they need to realize this and if they can't,totally avoid them as much as possible. Don't imprison yourself,cause of them.
Please take care of yourself,
DE