i hover around 1350 range and blitz is permabanned there too.

Ever had a game stalemate at about 45 minutes? Just endless team poking but no real fight. It doesn't happen with a blitz on a team.

As people have said above me, you need to pick a specific support to counter him. You can't go nunu vayne versus blitz, if they leave alistar open you can take him and still play vayne. Your best pick against a blitz is ezreal/mf and leona. I know mf doesn't have mobility but leona just needs to make sure she is the one grabbed then stun lock the adc or blitz while mf ults their face off. Ezreal for the obvious reason that his blink let's him dodge blitz hooks.

Sivir, ezreal, leona, alistar all good counters to blitz bot. If they don't have those champions then you should ban blitz.