To whom it may concern,
I have recently joined Gmarket membership because my friend strongly recommended your business and soon purchased books of ETS TOEIC 1000 Vol.2 on 8 January.
My first order has seemed successfully arrived on 11 January, but I noticed one mistake when opening the parcel. I have placed an order for four books instead of two books. So, I think two books are missing.
Namely, the books I ordered are two sets of ETS TOEIC Reading and Listening. However, I have received only one set for some reason.
Therefore, I would like you to solve this problem as soon as possible by sending me remaining one set you failed to include in my order without charging me additional shipping fee.
I hope my membership with Gmarket, which is definitely mutually beneficial, will continue in the future.