체이스 사인업 스펜딩 3개월 = 4개월?

저번에 Citi HHonors Reserve 스펜딩을 SM 답변을 믿고 했다가 4개월이 아니라 5개월까지 쓰고도 숙박권을 잘 받았는데요... (재컨펌 할때 SM으로 왔다리 갔다리 하긴 했습니다.)

이번에 사리카드 카드번호 알아내기 신공(?)으로 스펜딩 데드라인 관련 SM 문의를 했는데 ..

Thank you for contacting Chase about the dates for the 
spending requirements for the sign up bonus on the 
account.

Upon review, I see that you have the following offer is 

listed on the account. 

-Earn 100,000 bonus points after you spend $4,000 on 

purchases in the first 3 months from account opening

(Purchases do not include balance transfers, cash 

advances, cash-like charges such as travelers checks, 

foreign currency, and money orders, any checks that access

your account, overdraft advances, interest, unauthorized 

or fraudulent charges, or fees of any kind, including an 

annual fee, if applicable).

You have till December 23, 2016 to meet the minimum spend 
and avail the above offer on the account.

We appreciate the opportunity to assist you with your 
account and look forward to provide you excellent customer
service that you deserve. Please contact us anytime with 
questions or concerns. 

승인이 8/30에 났으니 12/23이면 거진 4달 가까이 되는 기간인데요. 그래서 다시 물어봤더니

Thank you for contacting Chase about the sign up bonus.
I would like to share that we give an extended timeframe 
to ensure that our Cardmembers do not miss out on the sign
up bonus. I confirm that the information provided in 
previous email is correct. You have until December 23, 2016

to meet the spending goal.

[..]

If you need any other assistance, you can send us a secure
message. We appreciate your business and thank you for 

choosing Chase.