As we talked via the phone, you need to raise Credit Note to us for invoice following below:
* Invoice.90155010 (period 02.06.13-01.07.13)
* Invoice.90156008 (period 02.07.13-01.08.13)
* Invoice.90157009 (period 02.08.13-01.09.13)
Kindly raise Credit Note to us, we will looking forward to get credit note from you soon.