ExperiGreen Lawn Care review: Can't cancel

My lawn was acquired from GO Green. I've been with Experigreen for two seasons. They killed a $4000 speciman Japanese white pine with pesticide. I've tried to cancel my service and they won't cancel. I 've been on hold for that department 4 times for a total of over 50 minutes. I don't trust them as a reliable business. My contact has been Michael Erickson ( he says he can't cancel the service) Obviously, Experigreen doesn't make it possible to cancel. Go elsewhere for lawn service and hope for better luck. They say they can't cancel. Fine let's litigate.I WILL NOT PAY FOR ANY FUTURE SERVICE: SIX PHONE CALLS