I was deported for life from the US and while I was incarcerated my father sent me IRS statements that stated that I was working while I was incarcerated... How can I cancel my social security number or how can I find out who´s using it?

Send the IRS written proof that you were in prison during the period you were supposed working and earning money.

They will investigate further by querying the employer who originated the W-2 or Form 1099-MISC that has your name and SSN on it.