Dear Mrs. Tim,
Thank you for your letter of 01 June regarding the poor service you received when you visited our store recently.
The incident was most unlike our usual standards of service and courtesy. The member of staff who was rude to you has been reprimanded; he also expresses his regret.
I am enclosing a gift voucher for USD50 which you may use at any Parkson store. If I can be of any further assistance to you please do not hesitate to contact me.
With my apologies once again.