Consumer Redressal

I have been cheated by https://allindiamoversandpackers.in/ I have booked my Fridge and washing machine to deliver in Delhi to Nawada, Bihar on a call on Ravi 9958697198 After negotiation of Rs 5500 to Rs 4500 Mr. Ravi(Employee of allindiamoversandpackers ) agreed to pick up( chattarpur delhi) and drop me at my house (Nawada, Bihar). My product have been Pickedup from chattarpur, Delhi on June 12. After picking up my product they have not wrote delivery charges on the receipt. they promised me to deliver in 3 days but after waiting 10 days, they have not delivered my product after asking about my product. Mr Ravi has given me a bill Rs 6790 in PDF form on WhatsApp on 22 June exactly after 10 days after pickup and asked to pay Rs 6790 immediately else they will not be deliver the product. till now I am calling again and again to Ravi and Ashok (owner of this company) but they are denying to deliver the product. I told him that I will lodge a complaint to the police they replied that "Jo krna hai kr lo. Jaha complain krna hai kr lo" My product is still in their hand. Don't know what to do in this situation Please help me in this Regard