"I'm sorry this turned out to be a poor transaction. It wasn't for lack of effort on my part ... " (more). I hope the package is delivered to you or it comes back to me eventually."
"Thank you for cancelling your refund request. It is greatly appreciated. Sorry that USPS had delays ... " (more) and it took so long for you to receive your package."
"Thank you for cancelling your refund request. It is greatly appreciated. Sorry that USPS had delays ... " (more) and it took so long for you to receive your package."