Sheen, 47, complained in an interview last week that he hadn't heard from his "Scary Movie 5" co-star since he gave her the money to pay her bill.
Sources close to Lohan told TMZ the "Liz & Dick" actress didn't mean to be rude, but couldn't contact Sheen because her phone broke and she lost all of her numbers.
Lohan is a 26-year-old former child star whose once-bright career has been eclipsed in recent years by her legal and financial woes, as well as her battles with drugs and alcohol.
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NBC reportedly holds celebs hostage to Jimmy Fallon's show