What I Will Do DEBIT OR CREDIT

we are providing equipment on rent to our customer now they send me one letter for balance confirmation..my company name is ZAHID ALI EQUIPMENTS and the customer name is ABC W.L.L
our auditors M/S DEFGH are currently engaged in the aurdit of our accounts for the financial year ended 31/12/2009.
kindly confirm directly to our auditor you balance with us as at 31/12/2009
the below confirmation slip should be filled in and faxed back to our auditor.
CONFIRMATION
we confirm that the balance due to us by ABC W.L.L
As at 31/12/2009 is Debit / Credit : 450000/-
can you tell me here i will Tick Mark on Debit or Credit ?

It really depends on the balance on your balance sheet or the balance which has to be paid by the vendor or client. If it is the balance you have then "debit", if it is the amount to be paid then "credit"

I think u had provided equipments to abc, so
u gonna receive from hem so, if there are no advance payments, then it will be debit.