Best Refrigerator Water Lines in Kansas City MO

I called them up to come for some Sewer Gas. They called before coming, and I asked the Plumber over the phone the pricing, because I wasn't told that before. He said Service Call is $50 min just to come over. If they had to get any tools out or do anything it is $120 min. I said go ahead and come over. We walked up stairs to laundry and downstairs to basement and explained where the smell was coming from. He pointed out to P Trap Drains that were dry and instructed me to add a quart of water. In and out in less than 10 minutes. He went to get invoice and came back and it said $120. I inquired as to why it was different than the $50 I was quoted for service call. He said. There's a trip charge and 30 minutes labor. I said I thought a service call was $50, unless you did something. He suggested that they were cheap compared to other options and there was the mileage and trip charge and half hour. I paid the $120, but will not be recommending their services.