Dreadful customer experience and unhelpful staff

Why oh why is it so difficult to close an account with Discovery? I e literally been trying for months to close my (long time unused) credit card account to no avail.

I'm in the UK and no longer have an app, any other account or a phone that can make calls to SA (and nor would I if I did), which means Discovery is unable to communicate with me, nor I with them.

I can't verify myself via Facebook messenger as I have no other account, card (see list above). Despite the fact that I managed to get someone there to help me get a settlement letter to close the account, which I duely settled, they have yet to close the account, which is now attracting additional costs.

I've gone around in the sake circles that I did to get the settlement letter, but getting no where.

Come on Discovery, just close the ****** account!