Attempts by staff to calm or remove her only brought up further tantrums.
Her phonecalls to customer service went ignored, pushed aside as they were with her daily complaints.
Finally two security officers arrived, politely requesting Petra leave the premises before police got involved.
"Do you know who I am?!" She yelled, but the men urged her to leave before it would get worse.
The gathered audience failed to hide their mocking chuckles at this.
In that moment, something within Petra snapped like a rubber band.
She seized the precious timepiece, shattering the glass case in her grip. Brandishing it above her head, Petra screeched about thieves and conspiracies against her.
"Someone is scheming against me and I'm going to find out who. Do you hear me? I will do that and you all will eat your laughter!"