To pull the rug or carpet (out) from under someone’s feet means to suddenly take away help or support from someone or to suddenly do something that causes many problems for them:

e.g., When Linda’s husband suddenly told her he wanted a divorce, she felt the rug had been pulled from under her feet.

I felt like someone had pulled the rug out from under me when

health insurance said it was going to stop paying for my 

medical bills.

I’d love to quit my job, but I just can’t pull the rug from under 

my team like that.

Tradução: puxar o tapete de alguém.