It’s the strangest thing that we have gone through the exact same scenario and find ourselves here with the exact same username!
My husband and I also had our passports stolen, although this was on holiday and we have another trip planned that departs on 2 June. I have no idea if we will get a call back for an upgrade. It sounds like others are waiting until 48 hours before departure before they are called to collect their passports.
Have you had any luck since?