write a letter to the Editor of an English daily drawing the attentionof the concerned authorities to the disappearance of essential commodities from the market and requesting the Government to open a few fair price shops in the area
I suggest you to go through some of the sample letters on topics like "Request letters" or "Complaint letters" over the net. I found some useful letter samples at <a http://www.LetterExamples.org. Hope it will help you. Good day !