Interior walls are very bad

Review on Prestige Misty Waters, Hebbal, Bangalore

I bought this flat thinking that it's a good quality. But, after residing in it, came to know that we can't even fix water filter to the wall. I have changed many carpenters to fix it, but everyone said the same, walls are not supporting the drill. Whenever you drill, there will be a patch coming out, not strong at all. Funny thing is, even the window roller fell down today. Even if you close all windows, cold comes inside through walls.

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