Signed up for their service to get visibility into our infrastructure; we're a small company with a big setup. They bill hourly, but we do a lot of small instances that run for a few minutes at a time. Twelve instances running 3 minutes each is billed as 12 hours of monitoring.
We approached them to see if they would work with us on reducing the massive bill that resulted. They agreed to cut it by 50% if we signed up for additional services. I'm not talking about a future volume discount; we were working with them for a good faith credit once we discovered the mismatch with their billing model (we had already filtered out those instance types)
Objectively, we owed the money. However, every other vendor I've run into works with small companies like ours without resorting to those kinds of tactics, so it's a pretty terrible look for them.
Not only do they cold call people's personal phones, they do it after being told no. In all of their communication, they are pushy and give off used car salesman vibes.
I have no experience with sales but I always wonder what kind of incentives these people are given to take such draconian measures. Are they acting like stalkers because they get a fat commission check or is it typically do to something else?