I HAVE BUYED MI POWER BANK FROM PAYTM . ANT THAT POWER BANK IS DUPLICATE OF MI POWER BANK I HAVE WRITE MANY TIME TO CUSTOMER SERVICE BUT THEY NOT SOLVE BY PROBLEM THEY TELL ME TO COURRIER THE POWER BANK TO HIM THERE IS NO PROPER RETURN POLICY IN PAYTM .OTHER PRODUCT QUALITY OF PAYTM IS ALSO VERY CHEAP AND NOT VALUE FOR MONEY I DONT SUGGEST ANYONE TO SHOP ONLINE THROUGH FROM PAYTM. THANK U FRIENDS