first - kindly remove your personal information from your posts - note this is a public forum, so your information is seen out in the open - and is searchable via Google.
Now - as you used a consultant, and it is your consultant who is your authorized representative - all correspondences go to your consultant. If he did not get anything - then it is your consultant's job to communicate with the CIC in HKG. I see that all the efforts here are in communicating to the VO that a letter has not been received. At this point, this is not your most pressing problem, your problem is the deadline. Asking the HKG office why a letter was not sent or if the letter is not received will not solve your deadline.
This is why the suggestion is:
1. Get your consultant to work - have them send an official letter requesting for an extension of the submission based on the non-receipt of the instructions to submit the passport. They should be the ones doing all the work for you as they are your authorized representatives. Send it via email, send it via fax, then send a copy via registered mail or courier. Do not trust email works - get all possible ways to sent the message immediately.
2. The extension is what you should be requesting now from HKG VO, not asking why a letter was not received. The request is something they (VO) can act on in the quickest time rather than them (the VO) identifying where the transmittal brokedown. Focus on the more pressing issue first, rather than the cause of the issue.
3. As to the cause of the issue (nothing received) - use this as the reason for the request for extension. Highlight this in the letter as the reason for the request and include the information taken from the MP ministerial inquiry to add support to your request for an extension (coursed through your representative.
Focus on the pressing action you need to do now - get an extension. You can focus on the cause (non-receipt or nothing received from CIC/VO) later.
In many cases - such requests if sent via email can end up in spam folders - so this is why you should be looking at your consultant and agency and have them check ALL their folders (spam included) for anything coming from the VO. Also, have them check the application to ensure all contact details (email addresses, phone numbers etc.) are clear; a mistake in contact details can lead to wrong transmission of the message.
I really have to be hard on your consultant and agency. Rather than asking why they did not receive any letter, they should have IMMEDIATELY asked for an extension, being proactive to the possible effects of the delays. True CIC/VOs have their defects, but your consultant and agency should already be aware of this, and have processes and ways already in place to act immediately for the benefit of the applicant. They (your agency and consultant) are doing a very sham job.
../all the best