Very simply: they mislead you through and through and then apply bogus, outrageous charges afterward.
I could write how I received the quote, how I was misled and "incorrectly billed", and how I am waiting for the company's response to my inquiry which I was told to make via email when I called directly, etc. Waste of time. They know what they are doing. This is who they are and at THAT, they are perfect!
Instead let us put this whole thing in perspective. The price per tonne of solid waste in Toronto is $115.
The following website shows landfill fee schedule per tonne of solid waste in Toronto: https://www1.toronto.ca/wps/portal/contentonly?vgnextoid=1284ea8854f65510VgnVCM10000071d60f89RCRD
I was charged $185 landfill charge for disposal of household waste that contained old items broken and in usable condition, many of which could be donated. No chemicals. No dense items. No heavy items. No oversize items. In total: there was maybe 125-150kgs in total (I am being generous) - the two guys loaded the entire load by hand in 5 mins. So even at the 150 kgs, the company charged me 10 times more or so.
Get it? Judge for yourself.