Roto-Rooter Plumbing & Drain Service

Have used Roto-​Rooter before and trusted them. No more. When I use them it is always for the same service — cleaning out the sewer line from the clean out to the house and out to the alley. In 2006 this was $ 150. In 2010 it had gone up to $ 175. Pretty reasonable. We decided to call them out about 6 months later to prepare for several events at our house. The line seemed to be slowing down.
The service guy showed up and quoted me a price of $ 270. This was almost a $ 100 more than 6 months previously. I went in and checked the previous charge to confirm. When I came back out to question it he gave several reasons. Having to clean out both ways, price increase. However, he promptly dropped the price to $ 180 with a 10% discount. My BS detector went off and I told him to tell me what I owed for him coming out and for him to pack up. (I try to be fair in my dealings with people) He told me there was a $ 90 charge. While he was loading up I called the office. They could not give me a price or explanation of the discrepancy of the charges. They told me that there should be no charge for him coming out — it was a free estimate.
I contacted their customer service info. Played phone tag with a guy from the local franchise. He just kept asking several questions and never gave any real explanation for the behavior or apology.
I will do this service myself in the future or will hire a true local company.