Multiple PayPal users have been incorrectly charged for purchasing Mac OS X 10.7 Lion from the Mac App Store numerous times, with one user claiming to have received a bill of nearly $4,000 for the $29.99 software.

One customer who contacted AppleInsider on Wednesday said they were charged $3,878 on July 28 in a series of 122 separate charges for $31.79 each. They said they reached out to Apple but have not been able to secure a refund.

"Apple blames PayPal, PayPal blames Apple," they wrote in an e-mail. "They both are claiming to investigate, but I am stuck broke for three days now."

Source: Apple Insider