Karen in Burlington

I called John the Plumber in Burlington in late September due to a leaky shower. Colin came promptly to look at the problem. The cartridge needed to be replaced. He replaced it quickly. I was shocked to receive a bill for $600!! The job took 10 minutes. The next day, in the shower, the handle of the shower valve fell off and the pipes were banging. We had never had this happen in the last 22 years we have been in the house. My husband has tried to contact you many times to get the situation resolved. Colin did come back but did not know how to fix it. Calls are not returned and we have left 6 messages for Sherry, the manager. This is unacceptable!