bad penny

Translations
плохой грош
Like a bad penny, she keeps turning up no matter how hard you try to avoid her.
Как плохой грош, она продолжает появляться, как бы вы ни старались ее избегать.
Definitions
A 'bad penny' refers to a person or thing that is unwelcome or unwanted but keeps appearing repeatedly, often despite efforts to avoid them. The phrase originates from the idea that counterfeit or damaged coins (bad pennies) would circulate and return even after being discarded.