been doing this house for last 8 months,£27 per month double glazed units upvc, but with georgien bars stuck on to the glass on outside,,,always knocking bits off then having to stick it back on again,this is with wfp..anyway the women comes out after my last clean and tells me that once a month is not working out and she wants to go to every other month,i informed her that this could be done but it works out more expensive as the windows are twice as dirty as monthly cleans.She sayes that if i don,t do ever other for the same price she,ll get someone who will.What would you do,,loose the £27 or tell her to find someone else