Hi,
Before approaching your client regarding this matter, perhaps you should consider the following:-
When you carried out your survey, you noted all materials, items, tasks to be carried out on your weekly visit, you of course supplied your client with your findings in writing within your quotation. Along with your terms of business, Health & Safety Policy Statement, coshh and a service contract etc.
Your client, then signed this contract agreeing to the specification and price, a couple of months passed and everything was going fine, you got paid, your client was happy with the standard of cleaning, and everything was fine.
I assume that your cleaner was on-site for the 3 hours as contracted, if not perhaps as Dave suggested they found this out after looking at the alarm logs, or if you carried this work out during the day, noted that the cleaner was leaving early. If this is the case, the client is only trying to gain maximuinm value from your service, as would any business.
The client, then asked you to cut the service hours previously agreed, in order to save money, you of course explained that you were prepared to do this, but you pointed out that it was impossible to complete all the cleaning tasks within the new time constraints, so you issued a new specification detailing the new cleaning regime, and got that signed off by your client. If all you did was verbally explain the position regarding the new regime, I would apologise to the client for not making clear the consequences of this budget cut, and re-do the survey taking special notice of what the client wants cleaned and to what standard, then walk him or her through each cleaning task explaining the time/cost implications, letting them decide which task/tasks are carried out by you.
This way, your client is in complete control of their budget and quality of service, and will obtain a far better understanding of the reality of the situation.
You may of course, decide that this is really too much bother to go to, however, the real pain in the economy is still to come, many of your clients, may well decide to cut their cleaning hours as well. Only those contractors who are prepared to go the extra mile, and adapt to the new financial reality will survive and grow in this market.
Ricks comments about "setting your standards and stick to them" will do you no good at all, after all it's not your standards that matter, it's your clients perception of your standards that matter!
Regards,
Rob