White Shark Window Cleaning

Had a quote done for window cleaning only the outside portion of our windows and set an appointment based on that quote. When the rep from White Shark called to book the appointment, he didn't know about how I could pay, nor did he provide any information about work needed in advance of the cleaning (even when I specificially asked about internally mounted screens, I was told they could work around them).

When the team showed up to clean, we were asked to remove all screens (taking an hour out of a busy work day to do this unexpected work) so they could get started. They completed most of the windows (skipping two for some unknown reason), tidied up, and left. Two days after the work was done, we received the invoice and payment instructions. We were being billed an additional $50 because some of the windows were very dirty. They apparently had someone come out to look at the windows in advance of providing their quote, but didn't notice this?

Repeated attempts at communicating with the company to get the extra charge reversed (as no one mentioned it before work started or while on-site) have been unsuccessful. Would not recommend as there are many other companies. Now I'll be looking around at eavestroughs to make sure there isn't any damage (as other reviewers have mentioned).