People treated at the Kitchener, Cambridge and London Sleep Centre want answers about patient records, reports CBC.

Referring doctors were not told of the KCL Sleep Centre closings and patients have been arriving at the doors, some having waited months for an appointment.

“Please be advised that the London Sleep Centre has been closed, due to unforeseen circumstances. No further studies or appointments will be conducted, at this time,” the notice on the door of the clinic, at 1408 Ernest Ave. in London, states.