Section 406 & 420

The police has filed an FIR under Sections 406 and 420 on the basis of the complainant who claims we took money and did not proceed to sell the flat. Whereas the reality is we took the advance amount and the buyer did not show up at the time of registry in 2014. We then proceeded to serve them 3 legal notices sent by registered post stating that the amount paid would be forfeited if they do not complete the deal in 6 months. We did not hear from them for a year and then the property was later on sold to a different party. For the last year or more these people have been pressuring the local police and trying to file a complaint against us, we submitted all documents to the SSP and the case was closed. Now as I stated above the police have registered an FIR and we have been unable to get an appointment with the new police SSP and SP forthe last 2 days. Since UP does not have anticipatory bail what are our legal options if police files a chargesheet against us? Do we get a stay from Allahabad and what costs would need to be incurred in all these steps ? please let us know.