The CFS charge did not included the costing; therefore, we did not issue a refund to our customer. or: issue our customer a refund. (Either one is fine.)
How are you? The total ocean freight cost for your cargo is USD xxx. Please find the attached debit note for your reference. See you in July!
Please find attached for your reference the debit note. or: I am attaching the debit note for your reference.
How are you? => I hope all is well with you.
See you in July! => I/We look forward to seeing you in July.
Student or Learner