Again, you're not focusing on what I firmly believe could be the game changer for you. However, because I understand how stressful the AOS process can be in general, much more stressful in your particular situation, I will respond to this post.
1. A pending status is a pending status, regardless of if the AOS petition being filed while already in a pending status is marriage, employment, relative, or DV based. A pending status is not FO or IO based.
2. A "request" with USCIS is already made by virtue of your submitted AOS petition - basically, what KCC is telling you is that if you want to process your selection via status adjustment, you need to file a formal request with USCIS. You're assigned a FO based on your home address as indicated on your I-485. Your FO, based on the workload they have to contend with, will then schedule your interview - you do not make any other formal request. You may schedule an INFOPASS to follow up on the status of your case, if you feel it's been pending for a while, it's not guaranteed to lead to the IL being sent/issued right away.
Now, I strongly suggest you go through the AOS spreadsheet we've put together to help you understand the AOS process. It's obvious to me, at this stage you clearly don't understand the process. There's no reason to be calling KCC if you're processing AOS, KCC does not handle AOS cases, their reps do not understand what the process involves.
p.s. I'm really not sure what it is you're paying your lawyers for, if they can't explain the interview process to you; or clarify what a pending status is.