I almost agree with OUTCAST.
I had a similar situation happen to me 10 years ago. My mother living in another state 7 hours away. Talked to her Thursday night, advised her would not call on Friday, flew home on Saturday, and tried to call. No answer...Tried later, no answer, checked with all close relatives, no body knew anything.
Call the local police for a welfare check....they followed all the steps of above, and could see nothing....but did report seeing her walker...If the walker was there she was there.
I had to call out a locksmith, and have him open the door for the police, ($125). There they found my mother laying on the floor knees bloody from trying to get up for 3 days. She had fallen off the bed hanging up the phone after talking to me on Thursday....
So having a locksmith open the door was the key difference in my case. (And probably cheaper than repairing a kicked in door.