Advertisers BEWARE - your phrase match and exact match keywords can trigger from entirely different terms

Did you know that when you create a phrase match or exact match keyword that***(similar but)***different terms can trigger your ad and cost you clicks? This seems to conflict directly with the keyword documentation I am reading. https://advertise.bingads.microsoft.com/en-us/resources/training/keyword-match-options Phrase Match *"triggers your ad when all of the words in your keyword match the words in a user’s search query, in exactly the same order, even if other words are present in the search term."*Exact Match "triggers your ad when the exact words in your keyword appear in a customer's search query, in exactly the same order — including singular and plural forms."

There is a table that lists types of "close variations" of a grammatical nature with examples that seem to be entirely reasonable and understood. However there is no explicit mention that a phrase match or exact match keyword could also be triggered by a "close variation" term...that Bing deems "similar or close". This is what a customer service rep informed me of when I spotted some strange terms being triggered by a phrase match keyword of mine. It was even suggested to me that the responsibility of cleaning up this mess was up to me adding a whole bunch of negative keywords. Can I even trust in that functioning properly? 


I know that when I am planning keywords for a campaign and ad group that my most optimized keywords are phrase match and exact match because they are intended for specifically relevant keywords. I have no expectation that additional keywords are going to be thrown into the pool and cost me clicks that I don't want and that my ad and landing page is not accurate for.

Needless to say I have set aside a lot of time to comb through this disaster, pause keywords and add a number of negative keywords. If you are unhappy about this please upvote my suggestion.