Had a similar experience with them, they are truly the worst. We wasted a bunch of time trying to figure out how the ingestion volume could be so high and then realized that 99% of it was from the ridiculous default settings of their universal collector agent which was dumping detailed system stats every few seconds-- all to drive up usage so they can harass you about spending more money on their awful product. I did the renewal call with them just to basically tell them how outrageous their company is.