Excessively long lunchbreak without arranging for replacement worker.

On 5/8 2020 at 14h00,no one at the security /key cutting department. Asked for help from another worker, was informed that there is no body else to help there because if Covid, but the responsible person is on the lunch until 15h30! I find it unacceptable that there is no one /stand in person to help a customer and in all my years as an employer it is the first time that I hear of lunchbreak from 14h00 until 15h30 with no replacement worker in a shop where customers should be attended to!!