Acer India — warranty repair

Recently i called acer india to repair my laptop as it was producing cracking noise (Speakers), they sent a engineer who put new speakers on, but the moment he turned the laptop on it does not start, they told me we will order motherboard, its been 3 weeks everytime i call acer they say awaiting spare parts. I am frustrated by their response. I think i will have to go to consumer court.

Please help me out here