Ashwin, 40, and his friend Avi Krishnamurthy, 35, spent Monday night in Bandra police station's lock-up and were produced before a local court which granted them bail on Tuesday.
According to police, Ashwin went to Escobar on Monday night and was having drinks. He asked the staff to bring some more alcohol, which they refused citing 0130 hours deadline.
Enraged Ashwin and his friend started arguing with the waiters and refused to pay the bill, that run up Rs 30,000, until their order was accepted.
"When the staff refused, the duo assaulted them. The bar staff notified police when our men went there. When asked to pay the bill and leave the bar, the furious duo punched one of our constables," said DCP Pratap Digaonkar.
"They two were taken into custody and booked under relevant sections of the IPC for assaulting and preventing a public servant from discharging his duty," Digaokar added.
The duo was on Tuesday produced before a court, which granted them bail, he said.
According to sources, while talking rudely to the staff and cops, Ashwin stated he was very influential and from a rich family.