Confusion about tds

Dear All

Pl. advise :

Our company received the bill on 12th July 2013 from the vendor.

Billing date was 30th June (for june month) & company booked the same on 30th June in books and deducted TDS on CREDIT.

I have confusion that how can company deposit the same deducted TDS amount in 7th July 2013???? because as per my klnowledge TDS deducted should have been deposited by 7th of  the follwing month in which TDS has deducted.

Please understand the question and clarify me ......i shall be thankful to you.

Thanks