What a lady garden.

[miles]

Take a pic if you can, there are 2 types of Cam Pulley, one with 3 bolts on which are more prone to snapping as over tightening them causes the metal to crack but dead easy to adjust, the later type with one bolt in the middle are better but can give issues, the bolts should have thread lock on them at the very least.
If you can see Tipex on there its a sign of doom and gloom as the person doing it has little knowledge of cam belts