Apparently Busta Rhymes has been working on more than just a new album, he's been putting in work on the phone lines and has reportedly racked up a $9,000 bill.

Apparently the rapper was spotted at an AT&T store dealing with the astronomical bill last Friday afternoon (June 10). One fellow shopper at the phone store recounted that a frantic customer service rep was chained to the phone trying to sort out Busta's telephone tab.

According to the source, Rhymes racked up the $9K bill by rapping over the phone for the past three months. A rep for Rhymes responded, "No comment" upon questioning.

As lightning fast as Busta's rhymes are, you would think that his phone calls would be relatively brief!

Watch Busta Rhymes' 'Make It Clap' Feat. Spliff Star