Reset an account?

Second try here, as the first attempt was magically deleted. I’ve been seriously messed around with, regarding my account. I have been playing paragon on the ps4 for a good long while now, and now that I want to try fortnite on ps4, I tried to create an account, and log in. However, it told me I was already linked to an email/account. I had never done this, to my knowledge, and the only emails I used were not linked to an epic games account. Is there any way I could get this sorted out, and get my ps4 account linked to an account that I’m actually using?