I asked for an idea of cost to replace one bay win...

I asked for an idea of cost to replace one bay window with triple glazing, but only needed a rough idea initially. The guy I spoke to said he couldn't give me any rough estimate without seeing the property. Which I knew was rubbish but I thought that's going to be the standard answer who ever I ask. So I played along but simply stated I wanted a low key visit and no pestering phone calls.
I've had 5 phone calls in 20 hours and they would only offer to make an appointment if both myself and my wife we're present. For an estimate? Ridiculous! I've asked for my details to be deleted.