YOU SAID:
6th and 6th and 6th of August to the 11th or 15th if possible to send you a check and I can make sure that we have you to for and only time that you have
INTO JAPANESE
可能であれば8月6日、6日、6日から11日か15日までに小切手をお送りください。お客様のご都合のよい時間内に限り、小切手をお送りさせていただきます。
BACK INTO ENGLISH
If possible, please send the check between August 6th, 6th, 6th and 11th or 15th. We will send you a check at a time that is convenient for you.
INTO JAPANESE
可能であれば、8 月 6 日、6 日、6 日から 11 日または 15 日の間に小切手をお送りください。お客様のご都合の良い時間に小切手をお送りいたします。
BACK INTO ENGLISH
If possible, please send the check between August 6th, 6th, 6th and 11th or 15th. We will send you a check at a time that is convenient for you.
That didn't even make that much sense in English.