New battery

I called Valley Auto Service Center on September 17, 2015 and asked for a quote to tow my car (2002 VW Beetle) and put in a new battery. After answering their questions, I was quoted a price of $250. I accepted the quote and someone from their establishment picked up my car and towed it to their facility. Approximately 30 minutes later I received a phone call from Valley Auto Service stating they had made a mistake with their quote. Their new quote was $348 (almost $100 more than the original quote). Even if I could have afforded to pay I wouldn't as there were 2 other repair shops that quoted $250 with towing. I told them I couldn't afford it and asked if my car would be towed back to my house at no charge since they made the mistake with an incorrect quote (I can understand $10-20 but $100 more?!!). The owner, Ken, insisted that I pay for the tow to his shop despite their mistake. I had to walk to their repair shop and pay for the tow. They jump started it for me and I drove it to Speedometer Auto and Electric where the battery was replaced for $184.48 Not only do they give poor customer service but they are way over-priced.