(CNN) -- The CEO of pizza giant Papa John's has apologized to a Sanford, Florida, customer after a delivery man accidentally dialed the customer and left a racist rant on the man's voice mail. The apology came after a customer posted on YouTube a video of the voice mail message, which featured the delivery man using racial slurs as he complained to another Papa John's employee about the size of tips he receives from African-Americans. The customer, who is not identified and is not shown on camera, shows the receipt for $15.26 and said he gave the delivery man a $5 tip -- more than 20% -- on Sunday. Then the customer plays the roughly four-minute message.
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Papa John's John Schnatter apologizes for employee's language
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A customer posted a YouTube video of a racist rant by a pizza delivery man
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The delivery man accidentally dialed the customer and left the message
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Two employees have been terminated, Schnatter says
The incident came as @placeholder remains in the national spotlight because of the 2012 shooting death of an unarmed black teenager.