Amazon India — Booking amount & bill amount

Address:

Vill -nanna , po-jatia dist -north24 pgs,halisahar,west bengal

Hi i am sanjoy biswas we have booked 1pc wifi box at the booking time amount -239 with delivery charge 80 only total amount 319 but today we have received massage amount 339/- we have call mr xxx amazon delivery person not explain amount 20/- we try today morning customer care call but your side opposition only not solve the problem.