We don't have those guys around here, but I'd get pissed at them too. next time, try pointing at your ear and frowning...Shake your head a little, but don't say anything!
I'd contact the BBB and see if its an issue you can bring up through them.
We dont' get harassed by any lawn care companies...maybe its because we're a hispanic family living in a hispanic neighborhood....TruGreen would be wasting their time! hahaha.
Whats been pissin me off lately is going to the bank to deposit or cash a check and them trying to get me to sign up for some rewards program or open a new account with the guarantee of being entered to win some stupid prize giveaway every 10 seconds.