I have not received an invoice, Air mail, month 08/2015. Please send the invoice for month 08/2015 Air mail, but Air mail of the month 09/2015 I get already.
I have not received the invoice month 08/2015 Air mail please send an invoice Air mail Air mail, but month 08/2015 09/2015 of months I have been successful.
I haven't received the invoice Air mail months 08 / 2015 please send the invoice Air mail months 08 / 2015 but Air mail of the month 09/ 2015. I received it.