Starbucks has apologized to a woman after she allegedly found “666″ drawn with caramel in a coffee purchased from a Louisiana location Sunday.

The unidentified woman alerted the coffee giant to the incident by leaving a post on their Facebook page.

“I just purchased two coffees at your Mall of Louisiana location,” she wrote, according to WAFB. “This is how my coffee was served to me.”

Image source: Facebook via WAFB

Image source: Facebook via WAFB

“I unfortunately can’t give the young man’s name who served it because I was so appalled that I could not bring myself to look at him,” she continued. “The star is almost ok because it is in your Starbucks logo, the 666, however was quite offensive.”

“I am in no way judging his beliefs or dis-meriting his beautiful artwork, I am however judging his lack of professionalism and respect for others. I am a teacher in the public school system and if I were to present a child of atheist or pagan believers with a Christian art project I could be sued in a heartbeat,” the woman concluded. “I am of Catholic faith and would love to share in my beliefs daily. Fortunately I have enough common sense to present myself with professionalism and follow an ethics code. Perhaps that could be suggested to that particular location.”

A Starbucks representative told WAFB-TV that they have since apologized for the alleged incident.

“We are taking this customer’s complaint seriously and we have sincerely apologized for her experience,” a statement said. “This obviously is not the type of experience we want to provide any of our customers, and is not representative of the customer service our partners provide to millions of customers every day.”

The post left by the woman has since been deleted from Starbucks’ Facebook page.

Follow Oliver Darcy (@oliverdarcy) on Twitter