Several items here:
#1: T-Mobile wants me to log into their website to re-enter my expired credit card. The card number remains the same -- only the 3-digit code on the back has changed and the expiration date has updated. They seem to know this -- they are perfectly happy to keep billing the "expired" card, but my $5 per month discount is removed until I update the card.
#2: Their website is a circus to log into. I'm unclear if it's because I'm on vacation out-of-state, using a VPN, or have/had Privacy Badger plug-ins to block the 13+ trackers on their site. In any case, by the time I have turned all that off (and after deleting browser cookies) they either are on alert that I must be an attacker or else their shit just malfunctions.
I begin an endless round of enter email address and password, get sent a 6-digit code by email, enter that code, have to enter my T-mobile phone number (which I never use since this is a 5G home Internet service), get told the "good news" that there is already an account associated with that phone number, then start this same cycle all over again (email, password, 6-digit code...).
#3 So I give up (hoping "attack" alerts will be expired by the next morning) -- nope -- same problem loop as in #2 above. So I call tech support. They want a PIN number I must never have gotten (I ALWAYS write these things down). "No problem" -- they can send a temporary PIN to my router -- if I'm at home to receive it.
#4: So I try online again -- this time with VPN enabled to look like I'm near home. The website starts entirely blocking my ability to access the site at all. Okay... So I turn VPN off. Now I can access the site again, and once again enter the login infinity loop as in #2 above.
Keep in mind all this bullshit is so I can save the $5 per month on an "expired credit card" that they know is not expired since they can keep billing it while I'm not able to login and update the expiration date and 3-digit code!!