Korean discount cards
If you make many purchases in Korea, many of the big companies will ask if you have a point card. You can save 5% with purchases over 1,000₩ with a Happy Point Card at Paris Baguette, Baskin Robbins, Dunkin Donuts, Paris Croissant, Café Passcucci, and Sanuki Bore.
If you want one, say, “해피포인트카드만들고 싶어요” at the register.
And, if you ever forget your card, they can look up your membership with your phone or ID number after you say, “카드 안 가지고 왔어요. 번호로 적립할게요.”
Also, if you have Korean cell phone, most providers offer a discount card for various companies (e.g. Domino’s, Mr. Pizza, Starbucks, Paris Baguette, TOUS les JOURS, Holly’s Coffee, Cold Stone, A Twosome Place, Bennigan’s, etc.). You have to contact a customer service agent on the phone during business hours (typically Monday to Friday, 9:00am - 6:00pm) and they’ll mail you a discount card within a few weeks.
For LG U+ dial 114, press “0,” and you’ll talk to a representative who you can ask for English.
For KT Olleh, dial 016-1583. You can talk directly to an English Representative.
For SK telecom, dial 114, press “2,” press “0,” and you’ll talk to a representative who you can ask for English.