We've had a cleaner for a few months now who did a fab job in the beginning. Over time she seems to have taken on more clients than she can handle herself so she started bringing her daughter or husband with her on occasion and they clean the house in half the time. Problem is that when she brings one of them something obvious always gets missed! 2 weeks ago it was the hob- completely uncleaned- and another time the kitchen table got ignored. What do I do? She's Bulgarian so it's not very easy to communicate with her...