Try this with the 2nd one - "Would you prefer to have a call out service rather than a regular reliable w c??"
At this point the answer is always "yes"
"Ahhh ok then, you'll need the AA / RAC they do call outs, I don't. Thank you for the past work". Then bin 'em.
Or, when the answer is 'yes' they would prefer a call-out service.... try this......
'' OK, that's no problem, we have a few customers who prefer this option.....
Our 'Call-Out Fee' is £XXX...plus our 'Window Clean' of £XXX....so the total would be £XXX ''.
Just another option, if they don't like...they don't like
.... who knows
.