Amazon India — price increase after ordered in lower price

Address:

Kolkata, West Bengal, 700035

I saved and subscribed saffola tasty edible oil on 28/08/2017 @ rs. 447/- per 5 lt. Pet jar, but after 3 days i. E. On 30/08/2017 the price increased to rs. 525/- per 5 lt. Pet jar.
This is not first time, it had happened eariler
Also and for this reason i forced myself to
Refuse accept the delivery on higher price.
Now please look into the matter and solve
The price increase problem.