Sony India — Negligence of installation

Dear sir,
I have purchased a home theater system bdve3200. and complaint to customer care for installation of the above said home theater system on august 19 with id34010571 and it was insisted to shrusti enterprises davangere. but one person from shrusti enterprises called me by cell [protected] and told me that he will send a technician. but no one called me on aug 22. i called back to the same number through which he called me but he didn't pick my call. i again complained to the customer care number & lodged a complaint of the same on aug 24 with id34117855. the person from customer care assured me that he will make arrangements within 2 days. but no one from the above said enterprises visited & made installation. again on aug 27. i called to the customer care with id 34188766.& asked for the reason he said me that first time when he called me. i never got the call. the second time there was a power failure. which seems so silly to me.& said to the third person of customer care that if i never picked his call. how could i call him back. & for the second reason how come he knew that there is no power in our place. my home is equipped with u. p. s which is enough for installation. i also said the 3rd person from customer care whom i called on aug 27 that if you can suggest the service center technicians to install by one day. but till date no one of your service center customer care called me up & resolved my problem. i fell shame to say that such a huge reputed sony company does not have a proper customer care service & installation team. hence please buy back the home theater system so that i can purchase an another company's home theater system or else take action against those presons who are spoiling your reputation. hope you will do the needfull& reply to me the action taken against them.
Thanking you,
Roy.