Dear Felix
If you are not satisfied, we have not done our job properly. I’m sorry that you are not pleased with [STATE PRODUCT (S) our Magna flux compressor] (invoice #[INVOICE NUMBER]). I will immediately issue you a credit in the amount of $[AMOUNT], to be used against your next bill.
As you may know, we usually charge a [X]% [restocking / return etc.] fee to cover the costs we incur to restock and repackage the product; however, I want to keep you satisfied. I have waived this fee for you.
{ADDRESS THE REASON FOR THE RETURN AND TOUT ANOTHER PRODUCT, IF APPLICABLE, ex. I understand that operating temperature is a key concern for you. May I take this opportunity, Mr. Smith, to suggest our R3B model? This model will interface with your existing machinery and operate at far lower temperatures. I will be pleased to discuss the R3B’s features with you at your request.}
Please call me at XXX-XX-XX if I can serve you in any way.
Regards
Lydia