I don't know if you'll find this helpful, but you can make a request for information about the case. You may have to show up in person at the PD, but you may be able to find out some information over the phone.
Usually, even the most busy police departments will dispatch a welfare check within two hours. You might be able to find out at what time of day and the date the call was made over the phone. I've never had someone wait 3 days to call in a welfare check. I'm not trying to be a nosey noodle but I can see medical personnel calling in a welfare check if you missed an appointment, even if the appointment was set in error.
Again, I'm not trying to argue, only suggesting.
The police are loud knockers!!! They knock on everyones door loudly (including mine when my son's friend thought it would be funny to dial 911 from my house and hang up. 3 cops showed up banging on my door!!). But again the reason for the loud knocking is that police are trained to 'establish a command presence'. Consequently, methods of 'establishing command presence', in my opinion, is where many problems begin. Rather than acquiesce, some citizens try to establish their own command presence which results in escalation.
Anyway, I'm blathering on. Good luck to you and hope you have good holiays... 
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