Don't panic.This is a bloody nightmare.
Going to take the caliper off and see if the garage can get them out. If not, a new caliper it is. Gutted.
To get the old boots out of caliper stick a screwdriver behind metal ring and lever out.
Use a blunt screw driver if poss and try not to gauge caliper where new boot goes in.
You are doing ok with this (-:
Learning l o a d s