[Serious] Is this a CD or is my tinfoil hat on too tight？

Background: I have 2 packages that were supposed to be delivered on the same day. One package is regular and the other is not and both packages were sent via priority mail. I got a pink slip saying that there were no secure locations available for the regular package but I didn't get a slip for my darknet package which was the first red flag because the mailbox was empty and my mailman has been able to fit 2 priority boxes in my mailbox in the past. The next day I get another pink slip saying the same thing, but this time it's for my darknet package. Fast foward 2 days and I get a call from somebody claiming to be the supervisor for my local USPS office. (The number that called me was not the same number of my local USPS office) He wants me to come in tomorrow to pick up the packages and wants me to sign for them. (He only mentioned signing for my regular package) This is another red flag because I have never had to sign for something when it was either being delivered or when I had to pick it up at the post office. (Both slips DID NOT have the box checked saying I have to be present to sign at the time of delivery. I have already cleaned my house and have taken other precautions. Any thoughts? Thanks.