You can counter basically everything they do.
Run up to them, start hitting them. If they KB, charge. If they have skilled the root with their KB, stealth, choke if you're in somehow in range still, or just take the damage with Rebuke or Saber Ward up. then charge. They might have skilled a 3s Blind when you punch through their shield, dont use your stunbreak for that, save it for their stun. Seriously, if you are having trouble with Sorcerers, you should practice some. It's Snipers and some Vengeance Juggs you need to watch out for.