Broken Promise … Actor Geoffrey Owens Hasn't Received A Dime tmz.com

Nicki Minaj can dodge a shoe, host a weekly radio show and get millions of views on her music videos … but when it comes to honoring a pledge to help a struggling actor — so far, nothing.

Last week on her Queen Radio show, Minaj said she was sending Geoffrey Owens — the 'Cosby Show' star who took a gig at Trader Joe's and was shamed for it — $25,000 to help him out.

Sources familiar with the situation tell us Minaj and her team have yet to even contact Geoffrey or his people, much less hand over the cash.