Just as a quick count, it took me 68 emails, between Mar 14th, and June 6th, to get them to delete my account because it had been hacked. The subreddit /r/Epicgames had a few thousand threads all about this before they went and deleted them.
If you follow the official support site on how to fix your account, or even delete it, it literally goes no where. it just cycles back and forth between the FAQ's.
If that sort of support is acceptable to you, then by all means, link all of your accounts and credit cards together, across all of your systems.
I have had better luck with Valve/ Steam support, than I had with Epic games. Its one of the reasons I changed the descriptor of this forum to what it is.
(EDIT: Also EA support and Ubisoft support were better)