Aupaircare / does not care about welfare of children

My husband brought over an AuPair from Brazil with this service. She has told my children she is their 2nd mommy and he has allowed it. The worst part is that he is now in a relationship with her. She stays overnights alone with my children, which is clearly stated is not allowed in the rules they have on their website. She sleeps in his bed, confusing my children. She takes vacations often to get breaks away from the children. I have reported this to the agency and they have done nothing. Her "job" here as an Au Pair, or the visa she is here on is no longer valid as she is now considered a mail order... they refuse to look into to this issue and are allowing her to stay. It is confusing to the children as they think they have a replacement mommy. The Au Pair's mother comes to visit and tells the kids to call her grandma. This is unacceptable, and a horror story that you would never think would happen to you in real life, like a lifetime movie come to life. She also is lazy and sits on her phone all day long. She is more concerned about getting his money, vacations and social time than anything. I do NOT recommend this service as they seem to be only concerned about the money they are getting, and not the childrens welfare.