Disappointed in Ajax

This is a groupon coupon I bought oneline. Its was 149.00$ worth of service for 49.00$ for 3 hours of cleaning. I wasn't home the day they came but my husband was. They at my house for aobut 40mins. How do you clean a 2400sq home in 40mins. When I came back home I had to vacumm and clean my stainless appliances. They use some lousy products.