Consumer Redressal

Selected SOFA, advance given 3500. Got a receipt for payment(katcha bill). Then gone for final payment, and they refused to take a/c payee check or credit card or told me that charge me additional 14.5% or pay self cheque on delivery. Finally they agreed to take payment on CC, and told me that they will call me once CC machine is available.then I chased them for 3-4 days. and finally I agreed to pay by Self cheque on delivery but asked them that sofa should not be damaged. Then they said first u deposit money here, then only we will make delivery.. after some debate I agreed to do that, but asked them for check and loading infornt of me.. Now they are saying dont have labours. Although they are chargin separatly for labour=300 and Transport=800 as told to me. they talk badly and ill treat after taking advance, so that individuals get frustrated and leave money. What can b done?