I have a new cleaner. She charges £75 for a fortnightly clean. I have a 4 bedroom house. Before she started, I asked her how long she would be at the house for each time. She said it would, “take as long as it takes”. The first week she stayed for two and a quarter hours. When she came for the second time she only stayed one hour. I feel ripped off. Is this ok or not? Thank you