Default Moto G wifi and other internet connectivity issues. [HELP]

I've recently bought a MOTO-G 16GB from flipkart, I find my internet connection tripping while downloading apps from play store.

Also wifi is not static, I've to reconnect it every now and then, sometimes more than 10 times a minute. Sometimes I need to restart my router.

Even more frustrating, file started to download from play store, suddenly download freezes. Then, it disappear from status bar. I have to again reconnect to restart my download.

Does anyone know what the problem is?

And my brother also bought the same after me having same issue, so I think it's not an issue only with me.

Other details-

Not rooted/unlocked.
Came with Kitkat already in there.
No further updates are available right now.

Sent from my XT1033 (Moto G)
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