i shared this to anyone who completed there case what i did is i emailed NVC using the email, thats where i got my interview date

nvc format:

example

To: NVCINQUIRY@state.gov
Subject: NVC CASE NO. - LASTNAME OF THE BENEFICIARY - VISA ROUTE (K1,K3,CR1)

HI, GOOD DAY, MY NAME IS (APPLICANTS' NAME, DATE OF BIRTH, PETITIONERS NAME AND DATE OF BIRTH). I WOULD LIKE TO INQUIRE ABOUT THE NEW STATUS OF OUR CASE.
OUR CASE WAS COMPLETED ON (DATE) VIA NVC AUTOMATED 24/7 VOICE SYSTEM.
I WOULD LIKE TO KNOW IF YOU HAPPEN TO KNOW IF WE GOT ANY SCHEDULE FOR ME( MEDICAL AND THE INTERVIEW).ANY HELP IS HIGHLY APPRECIATED. THANK YOU VERY MUCH


note:
* If you are an attorney, include the name of the law office requesting the information.
* If the petition is employment-based, include the company/organizational name.
* Reference only one case per e-mail.
NORMALLY THEY WILL ANSWER WITHIN 3-5 BUSINESS DAY UPON REQUEST.

(HOPE THIS HELPS)..GOODLUCK