Apology For Incorrect or Late Payment Letter

From:
[Your Name, & Address here]

To:

[Recipient Name & address here]

[Date here]

Dear [name],
Hello.

We regret to inform you that we are holding back your payment for invoice [no.] until – [state condition for releasing payment]

– [Describe reasons in brief] –

So, unless you [condition for releasing payment], we will not release the payment.

Once you agree with the above mentioned, we will happily pay you in full.

Thank you for your consideration into this matter.
Regards,

[Your name]

Encl: [Enclosures List here]