Safestyle UK — Phone calls and cold callers

After having my WHOLE house (doors, windows, porch) fitted by Safestyle, they wont leave me alone, constant calls and visits to see if I need anything else doing, there is NOTHING else to do...contacted them at the call center, to be told that, yes I can have my telephone number removed from the calling list, but nothing they can do regarding the cold callers, I asked "Surely, your team knows where they have fitted windows (18 months previously) but was told that due to data protection they can't and don't have the address of where windows have been fitted, supplied to their staff drumming up business in the field...I was told "put a note in your window" what a joke