How do you remove caliper mounting bolts on vw polo?

Buy replacement bolts and rubbers from vw dealer - £25

cut away old rubbers to get at old bolts, they are hex key types but are probably rounded off so either drive in slightly larger spline fitting, or go directly to bolt splitter. Tighten on and you have enough space to tap loose with hammer. Replace with new suff. Terrible design & poor quality for vw.