Government of India — amazon is promoting his inhouse vendors like cloudtail

Address:

Nagpur, Maharashtra, 440009

We are distrbutor of brand omron and are billed at same rates as the amazon in house vendors like cloudtail but amazon gives rebates/ promotion to there in house vendors because of it they are able to sell the products less then there billing rates on ecommerce website and we are left only to watch them how they are doing so.
As an indian business man this is a cheating which the amazon is doing with us.
Please help an indian business man aginst this type of frauds of these ecommerce website.