Good call with morning times, was on the phone 8:30ish and in 10 mins I was talking to someone.
No luck though... the only suggestion was that this should be in place already and she doesn't have any idea why it's not acknowledged. They don't have an access to the emails, etc. so couldn't confirm what's happened to my email/attachment (btw, she was trying to convince that I might send it to wrong email or the attachment was too big, which is not true). Apparently I'm fine as I've got email reply, etc. so sent documents again to them and received a default reply.
If no confirmation within 2-3 days I'm calling them again, however I need to say already at this stage that this process is asking for improvements.