This shipment has been stuck in the customs office since around 3 months and I have been waiting for any mail or letter from the Custom Office but haven't received any till yet. Also it is not mentioned written in the tracking for any such redemption reasons. The shipment contains Brushless Motors, ESCs and some electronics ; no batteries.
Tracking Number - RY252801118CN

I would really appreciate any help regarding this as this is my first time with customs and I don't know what to do next.

Actually nobody exactly knows what to do next.... 60% chance is it's gone. Next time one item in a single package can be a better idea. And please try banggood's India direct mail. By the mean time you can contact a customs clearing agent (just google it).

Quote from: YashasR on November 18, 2018, 12:49:43 PM
This shipment has been stuck in the customs office since around 3 months and I have been waiting for any mail or letter from the Custom Office but haven't received any till yet.
Also it is not mentioned written in the tracking for any such redemption reasons.
The shipment contains Brushless Motors, ESCs and some electronics ; no batteries.
Tracking Number - RY252801118CN

You said "The shipment contains Brushless Motors, ESCs and some electronics."
How many motors and ESCs. And what electonics?
Are any of the items banned or dutiable?
Or is the quanity more than allowed?

Just clarify that your import is not a restricted item, and pay customs duty if any.
Didn't you get any demand notice from Customs?

The package has 4 motors, 4 escs, a flight controller, some propellers, vtx, some plastic mounting parts and that's it. Nothing such restricted or banned.

Also I didn't receive any demand notice or any letter or mail from customs.

@YashasR
I ordered 4 ESC, 4 motor,  4 x propeller and custom cleared the parcel & i received parcel.
I think problem is vtx.

you should order via "india post", such parcels as yours , you shall get it after a long time, its not lost as yet , since its gonna come via india post , just need patience on this one