What can I do if i've received my check two days agobut I was waiting for it from 2 years ago (it's for my 2016 refund). Ps. the check is expired

Ahh every time I call to Irs.gov answers the answering machine with no option to talk with any respresentative.
Ps. I don't live in USA, I live in Peru.
Thank you in advance for your attention to this matter.