You are the Executive Manager at Vodafone and you recently got a complaint from a loyal customer about his SIM card not working. Write an email apologizing for the issue and providing him a solution within 2 days. Sign yourself as Kim.
We are extremely sorry and apologetic for the inconvenience caused to you due to a defective piece of sim card of our company. We have got your mail regarding the same and I would like to let you know that we have already acknowledged the issue from our end.
This is extremely shocking that we received a complaint of this kind but all I can say is we are extremely sorry for the bad experience you had. On behalf of the company, I assured you to provide a new SIM card along with the necessary refund. The refunded amount will reflect in your bank account within 3-4 business days. A representative from our company will contact you on the given number regarding this. Thank you for your patience. Have a good day.