Unlinking account from faceit


so, i had account on faceit which was connected with my old steam account. i don’t open that account because of VAC ban in CS:GO and ban on faceit. now i created new account in steam and bought CS:GO in the steam shop after i created account on the faceit but accidentally i connected it with my old account which was banned by VAC and now i don’t know how to unlink my steam old account from new account on faceit and link new steam account. help me pls