Answer: Here it is
Step-by-step explanation:
Due to a problem with our system, we were unable to deliver your order as requested. - explaining a service fault
Thank you for your feedback. May we contact you by email to discuss a solution to your problem? - responding to a negative online
Because we have a 30-day return policy, we will not be able to send you a replacement. - denying a request
We regret that you experienced poor service at our café. We are offering you a free meal on your next visit to make up for it. - apologizing for a mistake