Dear Ms. Smith,
I’m writing to personally apologize on behalf of pany. I understand that your order was not delivered in a timely manner, and that is not acceptable.
We’re looking into what went wrong, and will work on finding a solution as quickly as possible so that this doesn’t happen again. In the meantime, I’d like to offer you a voucher for $20 off your next purchase, should you decide to give us another chance.
Please accept our sincere apologies. We hope to work for you again in the future.
Kind regards,
Lucy