Zoinks! An interal error occurred!

[Teufelgott-shadowsong (Teufelgott)]

There are a couple, actually:

Can't Add payment method

I am unable to add payment methods to my battle.net account. I have been trying since yesterday and it just errors out every time or will sit and spin infinitely. I get message: Heads up! something went wrong. Select another payment method or try again later.

Unable to sub

My sub expired last night because my old mastercard expired. I went to to go redo my sub with my new card and I got the error: Zounds! An internal error occured. Try again a bit later. If you see this message repeatedly, let us know. After several times throughout the evening of getting that error, I submitted a ticket. I got a reply from stating it was a known issue with mastercard. I do not have other cards and do not use paypal. After 15 years of using this card, I can no longer play.…