No one can tell you about medical call or refusal.
They are just courier service providers.
They only inform you that your documents has reached at our office.
Come and collect.
And if your address is clear and in service area.then only tcs courier can deliver that documents to your home.
Since the package is sent back sealed by CHC Islamabad therefore, Gerry's/Visatronix doesn't inform you about the status of your application on phone. You are just informed that your documents have arrived come and collect.
In some cases the documents are delivered to your door step via TCS in this case you are charge some fee for this service.