Defended non disclosed tip

Went to Cafe Ibiza in Fort Lauderdale and the food was great. Went to pay and they bring the toast machine over so I do tip as I do for a sit down meal but only after I get the receipt do I see that they had already tipped themselves 20%.

I called the hostess over and explained I didn’t realize the tip was included and accidentally tipped twice. She the DEFENDS it explaining the included tip gets shared amongst everyone but the additional tip was for her.

After a tense exchange she refunded my tip in cash. I was annoyed at the initial deceitfulness by blown away they defended it.