Bantia Furnitures — Did not deliver product so far i

Address:

500072

I have purchased one cot on 5th june, 2016 in bantia furnitures, kukatpally, hyderabad. They told will deliver cot with in 10 days. Later i visited store on 16th june about my items. Again they told deliver tomorrow (17th june). I did not receive cot and other purchase related items.
I went store just now (On 18th june - saturday) and asked about my items. Now these... Store guys telling, they will deliver on monday (20th june) or they will cash back the amount.

If they cash back amount, what is the meaning of waiting to receive the products form 5th june on wards. Please suggest some one how can we go in this scenario.

I did not except these type of worst service from a store whose have many branches in metro city (Hyderabad). Even road side sellers are doing healthy and good business with customers, then why this big chain store is doing like this...