CLARKSTON, Ga. -- A MARTA bus driver has been disciplined for forcing a disabled passenger to remain on a bus for as long as 30 minutes. The passenger told CBS Atlanta it happened because the driver didn't appreciate his lack of manners.

David Davis has bad knees, he said, and can't climb stairs.

"I'm handicapped. I can't fight," Davis said.

Davis said on Aug. 23, he was waiting at a bus stop on Montreal Drive in Clarkston when bus 125 pulled up. As usual, Davis asked the driver to lower the mechanical ramp so he could board the bus.

"And so he said something about, you know, 'You're not in a wheel chair.' I said 'Under federal law I don't have to be in anything to ask you to lower that ramp,'" Davis said. The driver lowered it, and Davis got on the bus.

Davis said when they got to Avondale Station, the driver let everyone off the bus except Davis. The driver then got off, too, Davis said.

"And I said, 'Hey, man, what about me? You ain't letting me off the bus?'" Davis recalled. "And so he came back, 'Who are you talking to like that?'" Davis said the driver told him he should have said, 'Please.'

"I said, "Man, let me off this bus. You can't hold me.' And he left me on the bus," Davis said.

Davis said he called 911 and waited on the bus for 30 minutes before someone helped him off.

CBS Atlanta asked MARTA's Deputy General Manager Dwight Ferrell whether passengers should be required to ask nicely before being allowed on or off a MARTA bus.

"Absolutely not," Ferrell said. "We tell our operators that when a customer asks to kneel the bus and deploy the lift, you do so," he said

MARTA spokeswoman Cara Hodgson identified the driver as Alonzo Duckworth. She said he was suspended without pay for one day and given a written warning and a written reprimand.

"Well, certainly, we apologize to Mr. Davis for any inconvenience associated with any of it," Ferrell said.

But for Davis, it's not over. He plans to press criminal charges against the driver.

"Any time you hold me against my will, that's kidnapping," said Davis.

CBS Atlanta spoke with former DeKalb County District Attorney J. Tom Morgan about the case. Morgan said a kidnapping charge would not apply in this case. He said a false imprisonment charge might apply, but that it would be tough to prosecute.

Davis said he's mad enough to press charges anyway.