I Need Specifics!!!

Just so everyone knows, I need to have specifics whenever anyone gives me instructions or I'm going to end up missing something. Mom just had me take her car in to get the brakes looked at with a coupon that would make it free of charge. I told her I would take it in when I took my room mate to work. My brother then comes to wake me up early and says she wants us to go at 9:00am. I guess its a good thing my room mate wasn't even back from her trip to Idaho.
Well I take in the car with my brother following behind me. Turns out he gets lost and looses me (even though I was going pretty slow. Turns out he almost gets hit a few times by other drivers). I tell the car people what needs to be done and I sit to wait for Drew to pick me up. When he gets there they tell me it should only take 20 more minutes so I send Drew home. After 20 minutes they tell me nothing is wrong with the brakes but the rear tires are bald. So I call up mom.
"Oh then just pay with the Discover Card." she says.
"I don't have the card with me."
"I thought I told you to take it with you."
She hadn't.
She tells me to make sure I have Drew bring me the card and hangs up.
I call Drew to come get me and bring the card. I then ask how long the tires will take. They wouldn't be in till after 3pm and I don't have to pay till after the service is done. So much for having Drew bring the card. I just have him take me home.
This would've taken less time if Mom had been more specific about what to do. She always get mad at me when I do what I think she means when just a few extra words would save her the trouble.