Yikes, I just lost my post to time-out!
To summarize: thank-you all for your ideas and comments. Lmcpug, special thanks for offering donation toward new chariot. We are finally coming to terms with the fact that it's unlikely that there's going to be a "change of heart" on the part of this / these troll/s; no magic reappearance imminent. Roscoe also seems to be realizing that this is not just a break in our routine...
A gentleman in the neighbourhood has offered to try to put something together for us if I get him a couple of wheels...ALSO, I'm in touch with The Fixer at the Toronto Star...we'll see what happens

A wonderful Thanksgiving to you all!
P.S. I did indeed make a report with the police

and was impressed by the efficiency of their procedure. And yes, lmcpug, I do believe that there are Angels all around

Be well!