Dump It Bins

I found dump it bins on google. Seemed professional when I called and delivered on time for my Reno.
However, it was a small project and not even half the bin was full of light weight material. I was told it was a $500 deposit and will be charged before drop off. Charges would look like this: $89 for drop off and another $89 min charge(1 metric ton min) and then $89 for every other metric ton when they officially weighed it after pick up. They picked up the bin on December 8th 2016 and I still haven't received an invoice or an official weigh in ticket as of January 4th 2017. I keep hearing I'll receive it "tomorrow for sure"
Extremely unprofessional and would not recommend.