Airtel
Egarding adjustment of pending amount of Rs.37 in my next bill

I requested that i convert my airtel lite plan into P.W.D PLAN .I clear my all the dues. i.e unbilled amount till (i.e april 22) that date under the customer account no.107-103881430 of mobile no.9815711511.But my paid amount is more (Rs.37) than of that of my bill. piease adjust my more Rs.37 in my next bill of my mobile no.9815711511.