Kindly see this letter and make corrections.

Dear Sir/ Madam,

We have transported the goods as per below mentioned invoices but haven't received LPO's yet for these consignments.

Moreover, as per your new contract you have mentioned any query after 60 days will not be entertained. Please source it out from your department so we can fill it for you.

Arrange to make payment at your earliest as we need funds on urgent basis.

Your assistance in this matter will be highly appreciated.