Sony India — part change of a sony bravia tv

My new tv had a issue with the screen and we called the sony showroom from where we bought it. Serviceman came our home and checked the tv and said that the whole screen panel needs to be exchanged so he took te tv with him. He said that we will get our tv back in 4-5 days but when we called them after 4-5 days they said it will take 7-8 more days as the parts have not yet received to change. And he said we can't tell you how much time will it take it can take upto 10 days too or more.