Visa Stamping from Canada/ Mexico

Had a bad experience today. Just a usual profile: Did my masters in US, working & been on continuous payroll for the past 5ish years, previously worked for a desi consultancy & currently a FTE for an American firm. This is my second H1B stamping interview @ 7:45 AM slot. This is how the interview went:

- Visa officer handed me a brouchure and asked if I have seen that before. I said yes, these are the rights I have as a H1B employee
- Visa officer then asked for my resume. Handed it over
- She then asked about my job responsibilities and about my company. Explained her in detail
- Next she asked for my DS-160 confirmation letter.

She then gave me a Yellow slip with none of the document request boxes ticked, but has a batch number and Julian date on the top right end. She has my passport, first page of the original I-797, copy of resume & DS-160 confirmation letter

I had always been very unfortunate with these visa interviews. My case was on 221G admin processing both the previous times: for student visa & again for my 1st H1B stamping. Attended these previous interviews @ Hyderabad,India consulate & it took nearly 2 months for the 221g processing to clear both the times.

Now I am stuck in Vancouver with no passport and have no clue how long I need to wait for this to clear. Anyone with similar experiences from the past (or) currently going through this tough phase, please reply here.