Spam

Considering the pain I just went through in getting a new card because of a *****ulent transaction (and an investigation I can't follow up on because discovery sees to it that contact is not possible except through sites like Hello Peter. They even have people tell blatant lies of media like X. Which is quite fitting for X, I suppose), I'd far sooner close the account than deal with further gross incompetence from discovery that would plague my life when trying to get yet another new card

That's either a really insulting or really dumb response. Not reading what people say, but replying anyway isn't a very good look.

They tried on an invalid number. Because of the *********** software engineers at Discovery I can't correct the phone number that they decided to mangle.

Whoever told you that an email has been sent **** to you. No one has sent me emails about the case except to say that they keep trying a phone number they know is invalid.

Regarding the "call us" advice, Discovery Bank knows very well that phone numbers are useless to anyone who is not rich in both time and money.