I'm sure this will have caused most, to be more cautious when marketing their services, but something that was never raised...........
Client expectations !!!!!!!!!!
This will almost never be the same as the providers and to overcome this potential problem, all you have to do, is " walk through '' and list everything that the client wishes to be done. Cost it on a time basis and present this, personalised quotation, which will either be accepted, rejected, or modified.
Only then, will you have a basis for working together and avoiding conflict, other than maintaining standards.
rob m