to be honest, with the lack of daylight hours these unreliable customers can sometime be a godsend, Allbeit, when in the past few years we have had the same, we find they don't bother to call next spring anyway and by thewn we have probably replaced them with 10 others anyway! We do have a few who are on summer month cleaning only as it really is a good area and nice to top up the pennies in the summer. They know and agree that every April they get a first clean price and the onto regular terms thereafter. We couldn't have too many of them though, but our longstanding customers are as reliable to us as we are to them......build up those business realtionships with the customers it really does work!