you could also try and take a chisel and hammer and try and turn the bolt by hitting the chisel on the edge of the bolt. ive gotten bolts out this way before. you might however miss and scratch the bindings...
if that doesnt work impact driver or screw extractor, then drilling as a last resort. depending on how far out the head sticks you might be able to grab it with some vice grips and turn it that way.
I thought the response from customer service was reasonable, I would have told you to fuck off and stop wasting my time.
You phoned a customer service hotline because you fucked a screw.. holy fuck I've heard it all now!
Email and labelled as low priority, not phone-call.
And I contacted Warranty, not customer service if that makes any difference. The reason being is because if I had to drill out the screw, I want to make sure Rome approves of it first just in case of any mishaps later down the road with the heel cup breaking and they want to blame it on some other user-end fault that I have some email backup.
Can't believe you don't understand that simple thought process. Now you fuck off.