On December 5, 2019, we called Robbins Heating and Air Conditioning to service our furnace due to it not responding to our programmed thermostat temperature. They cleaned the flame sensor for a charge of $89.00. February 13, 2020 Robbins Heating and Air Conditioning came out AGAIN due to the furnace/thermostat not maintaining the programmed temperature. Essentially the same problem we had on 5 December 2019. They said the thermostat was not wired to the furnace, only running on the thermostat battery, and they would be happy to fix the problem for $150. A 5-minute fix BTW. The impression we got was they were looking for a reason to charge extra for the trip out to our home. It was validated when we were told by Honeywell that our thermostat was already wired for power via our electric utility company, and the batteries were only a backup. Basically, the only wire that they connected was the blue wire and cleaned up the other color wires, all other wires were already connected. As a result, it was essentially a lie that the furnace was running on the other wires and not just the thermostat battery. Robbins Heating and Air Conditioning told us there would be no diagnostic charge for the February visit since they were coming out again regarding the same problem we had in December. However, we were charged a $149.99 minus $50.00 coupon to equal $99.99 to connect the blue wire on the thermostat and check the furnace operation. A blatant overcharge. Besides, they found nothing wrong with the furnace. In fact, they said if the problem continued, it was a bad thermostat. Needless to say, we continued having the problem after a couple of weeks with the thermostat not maintaining the programmed temperature. Therefore, at their recommendation, we changed the thermostat and it did NOT fix the problem. Our recommendation to all future customers is to NOT use Robbins Heating and Conditioning. Even when we left a message for the owner to contact us regarding this situation on March 2 we received no phone call back. As a result, we left a message for the owner to contact us AGAIN on March 6. Steve, one of the owners, called us back on March 6. We explained the situation and said we should not still be having the problem after we replaced the thermostat per their technician. We felt like they took advantage of us with the visit on February 13 and still never fixed the problem. We asked to be reimbursed for the charge from December and February. Steve said they could not reimburse the December bill since it was after the 30 day warranty period (all they did was cleaned the flame sensor). He also said he could not reimburse the February bill since they had to charge the diagnostic charge of $75.00 and they could only reimburse us $25.00. We explained there was to be no diagnostic charge of $75.00. The only line item on the bill was to rewire the thermostat and check the furnace operation, nothing about a diagnostic charge. As a result, we called another company that actually fixed the problem, which was a bad flame sensor and was even cheaper. The furnace and thermostat have been working properly after a different company came out and fixed the actual problem. A problem that Robbins Heating and Air Conditioning could not fix since December 2019 but be happy to keep charging us for *potential* solutions. Robbins Heating and Air Conditioning provide extremely poor customer service. The owner never called us back until we left two messages. They lied to us about the thermostat being the problem (or were incompetent), charged us for a diagnostic check in February when it was not warranted, and never permanently fixing the problem. Consequently, we will NEVER use this company again or refer them to anyone. We hope others will learn from our personal experience and go elsewhere.