This is a bit long so sorry in advance...So I have family member (won't be specific) who whenever they have an errand/job to do they somehow feel they have to get others involved. Things like this...say they need to go to the post office to post a parcel, I will get a phone call asking
Where am I?
What am I doing?
What are my plans for the day?
I say oh not much etc etc why?
Then the request follows with "oh I need to get to the post office and I was wondering if you were going into town, you could pass by my house (5-7 mins In opposite direction) and collect said parcel and post it for me? I will follow up with ah sorry I didn't plan on getting in the car today/going into town etc
They will order something from the local shop in my nearest town suburb and then ask me to collect it (to save them a 10 min journey) but it's a 10 min journey for me too 
This person is not old, they can drive they don't work all week, they work part time over the weekend! It's starting to drive me nuts!
Now when they ring I'm afraid to say my plans as I know I'll get roped into a job "whilst I'm there" like it's no bother. But sometimes it IS a bother. I hate being put on the spot, I hate saying no too though and I just can't the whole situation!
If you have stayed with me this long...thank you!
Anyone else have someone like this in their life??!!