BORNCANADIAN....In the email that you got which requested your passport,This the reason your email is not being responded
"Please note that we will strive to meet the foregoing service standards. There may, however, be occasions when we cannot issue your visas within these standards. Accordingly, you are advised not to commit to any travel plans, purchase tickets, or take any irrevocable action such as selling property, or resign employment until you have received your immigrant visas"
Also know that,if you have more time on your medical before it expire,Just know that, officers dont quickly work on returning your passport
what i can tell you is to be calm and soon you will get your passport back.Good luck