Extremely poor customer service! Contacted this company to preform maintenance to an elevator in the Chicago Loop. After many many unanswered calls and emails, an appointment was set up and the tech arrived - late- and within 5 minutes said the problem was an electrical issue to the power source. We called ComEd - no electric issue from the line to the meter. Called 3 electricians - no electrical issue to the elevator. We need an elevator technician. Called back to Essential. Mary Ellen is extremely unhelpful. Sent emails to understand the problem, asked for a phone call to get better explanation of the problem. NO CALL. Had to hound and hound to get any information - Still nothing. FInally caught Mary Ellen, and she told me that she would "See what she could do" - They want me to pay for the tech coming out - but REFUSE to tell me what the problem he claims he found - they will not stand behind their work and meet with us and the electrician to tell us what they feel is wrong. I will pay for service when the service is rendered - but if you can't stand behind your claims and 4 companies tell us that the problem is not what you claim - YOU should NOT be in business. read more