Automated region / country change system doesn't work

I’ve only played overwatch in this acc years ago and it was my last purchase, country region change is asking me irrelevant stuff like hearthstone card backs and wow character creation date or gold buy like what?? I never played any of them in this acc and sent a literal utility bill + birth certificate + certificate of residency with my problem included to the support but got back an automated response saying use this region/country change system. YOUR SYSTEM IS NOT WORKING I CANT PLAY THE GAMES BECAUSE IT DOESNT LET ME REGISTER MY PHONE NUMBER WHAT SHOULD I DO?