Always pay your taxes. That is a criminal issue.
The issue regarding 90 days would be a civil issue. They would need to win a court action allowing them to collect. No one will arrest you at the boarder in this case. If people who did not pay their bills ended up being arrested. The streets would be empty.
In the US the 90 day issue would be laughed out of court. Also there is a issue of predidence. If CX allowed some others to not pay, the question is why me and why now. Discrimination??
Take a shower and enjoy not having the CX stink on you. If your worried about a US company being concerned. You can explain yourself. They will understanding.
Best of luck.