Please be advised that for the USD 0.93 is outstanding to be reduce on invoice of Oct, 2013(the overbilled total USD 6.34 and we already reduce USD 5.41 in the invoice of Jun,13 - Sep,13 detail as the below invoice). Invoice of Oct ,2013 you have custodian fee total amount USD 1.50 (1.50-0.93) so, invoice of October,2013 the amount to be settled is USD 0.57