New Water Plumbing

Worst experience ever. My bath tap was leaking water a little bit. I talked my condo management office. They advised me to contact New Water Plumbing. Then I started to contact the company. I sent pictures and explained problem to them by email and phone. The said they will call me back. I waited for about 5 days. No one called me back. Then I called the company again. They couldn't find my case. On the phone it sounded like they got confused my case confused with another address or whatever. They said they'd call me back again. I waited for another 5 days. Still no one called me back. This time I called the company again and explained my bath leaking problem like a new customer call in. They recalled my problem and set up an appointment for me.
Then the nightmare began. On the appointment day, the plumper came on time with one greeting "I am a plumber". Then he came in my condo without taking off shoes (not even asked to do so). At that moment, I was okay because he could probably fix my bath leaking problem. He took out a wrench and tried to twisted the valve for only 2 times. Then he told me. It will cost about $600. I said that would be too much for me. I would not like to continue the job. Then he said each visit the minimal charge will be $150 which the office lady did not tell me at all. At the beginning, I was okay with some visit charge even the office lady did not tell me. However, the plumber did not even spend 3 mins in my condo. Then he come up with the $600 and $150 amount. I was so shocked and irritating. And during the whole process, the plumber did not perform any professionalism and patience at all !!! I refused to pay. He didn't care at all. He called his supervisor or manager. Then left without a word. This is the worst experience and service I have ever had.