Overcharged

I was totally overcharged by Elite Plumbing 24/7. They charged me R2850.00 to unblock a drain. When I complained they said it was two drains? and that was the going rate. But the drains all connected with one pipe. I have phoned 3 other plumbers who gave me a quote of R750.00-R790.00. Unfortunately I did not ask for a quote first, and also not looked on Hellopeter for all the bad reviews. So if you need to use them get a quote first.