Prasanna Travels — I'm complaining about travels departure

My booking with prasanna purple on 6/08/2023 from pune to nanded the scheduled time of bus is 8:30 PM, but on that day due to bad traffic of pune i reached at prasanna purple parking sangamwadi around 8:28 I already talk with driver and he told me we will wait. But on reaching there bus was already went at 8:52 PM my ticket was cancelled amd although there is representative of your company he didnt help me. So i want to file the complain.