[Resolved]  Sai Service / Car Rework/repaint — Excess tax levied

I have serviced my Maruit Omni car ( MH-12 FF 8082 ) from Saiservice station limited Pune.

During service I have made rework ( i.e. denting painting work ). While payment of bill I noticed that the painting ( item code B ) has been mention as contract value of Rs 4200/- + vat 8%( Rs 336) + service tax 10.3% ( 432.60) Total amount Rs 4968.60.

So the total tax collected is 18.30% Rs 768.60.

This mean I have purchase material of rs 4200 on which i have paid 8% Vat ,lso this is treated as service oavialed and service tax is collected . This is teasing consumer by double taxation

On question Sai sercice official told that this is by rule and practised all along.They denied to satisfy me.

My complaint is if this is ruke govtment is levying doulbe tax and consumer is cheated.

or saiservice is collecting excess tax from me cheating me by billing falsi ( Dummy bill)

I want that i should guide properly for tax amount collected and return my excess tax paid.
Also such service / practises should be enquired and stopped.