Voltas — 1.5 split ac

Address:

Jain Radio, Rajputana Rifles, Delhi Cantt, Delhi - 110010

On 26-jun-2020, i have purchased a voltas split ac 1.5 from rajputana rifles, delhi cantt, delhi - 110010 (Jain radio).
When the installation team came to install my ac the opened the box and found damaged cabin of indoor unit. I called to dealer to replace it and he send someone from service center (A. M. Services) to lodge the complaint.
That guy said my unit need to replace and it will be done in 4 days max 6 days. He raised a complaint and gave me a silp of it. But today its 9th day and that unit not replaced yet.
I called service center they said we didn't receive yet and can't say when the unit will come.
Someone please help me as summer is on peak and i am not able to use the product which i already paid for.
This type of service is damaging the name of voltas.