What's up with the bus driver?

I've started taking MTA back and forth from my apartment to work to be green and save money as well. Riding the bus is kinda fun because you meet all kinds of interesting people and don't have to focus on traffic. What I can't stand is the fact that if the bus driver is running early for some reason he will stop earlier than the stated time on the schedule. If I have to run to get to the bus stop from work at 4:32 when the pick up is supposed to be but the driver flies through at 4:29 this is not right! They are supposed to friggin wait. And I've talked to other people and called and complained to MTA myself and it does no good. What gives?