Your thread title is confusing, if you mean Demon Flip thats cool but Teleport?
The most effective ‘punish’ for Demon Flip/Vortex shinanigans is… Well, for Balrog, block and get out - Others will shout “Don’t get knocked down!” which as we all know is not exactly helpful, as true as it is. Balrog hasn’t a good wakeup game and Akuma is one of the top characters for abusing this on Knockdown.
Bad Akuma’s mistime flip a lot on wakeup so pay attention to when and how they use it.
If an Akuma is on you and flips too late you can dash-under it and either get out or hit them and see if they are blocking correctly. Too early and both are grounded which eases the air pressure slightly but isn’t all too helpful as SRK, SBK or Sweep can punish Backdashes and they’ll probably be throwing out a blockstring anyways.
Bad timed Demon Flip kicks can also be focussed into a crumple (Too high / Late).
Demon-Palm has to be blocked high & Armor Breaks so most Akuma’s will pepper the odd Vortex with this to discourage Focus Attacks or Focus Dashes. Demon Sweep obviously, I don’t see many use this unless mixing it up or trying to catch you out when you’re moving back or backdashing. The grab can be avoided with a jump so if you see an Akuma trying to abuse this then neutral jump into punish (If you don’t knock him out of the air) or just jump away.
With all the above in mind, the simple fact is that it’s a guessing game against a good Akuma and Balrog doesn’t fare well in that game because his escape options are limited.
Flips done from mid/full screen can be light/med headbutted or Downfierced so do not let an Akuma get in using that garbage - Additionally back/neutral jumping fierce will beat them all with Palm being the only possible exception depending on the range seeing as that can hit you out of the air despite looking totally ridiculous.
TAP & Headbutt aren’t ideal and will see you eat more damage so don’t throw these out in desperation, just block/defend and get out if you can and compose yourself.
For Balrog I find the defensive Akuma’s are so easy to destroy but the real decent aggressive ones can be an absolute nightmare when they understand how difficult it is for Balrog to get to his feet and get away safely through all Akuma’s shinanigans so stay patient, punish any non-safe attempts/mistakes he makes and, well, as said, try not to get knocked down into a Vortex ^^