Delhi Transport Corporation [DTC] — Less service of 392 and 492 buses

I want to file a complaint for less service of 392 and 492 buses. Either 3 or 4 buses are taken together and no bus comes for 30-40 minutes. Passengers have to wait for so long. I myself have reached so late due to late coming of buses. And these are so much overloaded that sometimes passengers even fall out of bus. This usually happens at the time 8-9 in the morning and around 2-3 in the afternoon. Pls resolve my issue asap.