Time limit to commence proceedings of case filed u/s 406&420; of IPC

I had filed a police complaint of harassment and mental torture, against a builder in Bangalore. On 26th.of September.2017, I received an 'Endorsement' from the concerned police station, that in response to my complaint a case u/s 406,420 R/w IPC has been registered. I have been following it up since then. On 7th.of Dec 2017, I received another intimation that investigations were going on, and as soon as these were over, the findings would be filed in the court of law. My Questions: a) Is there a maximum time limit, within which the Police is obliged to complete their investigations, and submit their findings to the Court? If yes, what is this time period?? b) How soon will the court take up the case , for hearing and judgement?? This is an 'open and shut case', wherein I have ALL the required evidence, and I suspect that the builder may have bribed the police to stall the proceedings. Your advice , would be highly appreciated, and useful for me to proceed further. Thanks