Bryant Heating & Cooling Systems Comfort Control

During their inspection of our furnace system they identified that the blower motor wasn't working. I purchased a new one and installed it (very easy to do) but the furnace still doesn't work. When talking with them they said that the circuit board typically needs to be replaced along with the blower motor. The bill only states that the blower motor is bad and nothing about the circuit board but now they're saying that the circuit board is probably bad. The person that inspected the furnace clearly told us that the circuit board was okay. They're also wanting $620 for the motor and to install it which takes less than 30 minutes to do. Unprofessional in my book.