they are operating illeagally. i have contacted them to advise this. also contact a solicitor. and if they continue to harras you and try to enter your property leagally caution them. and also state that none of what is of value belongs to you and if they take anything it is classed as theft. they do not have the right to search rooms in your property. they cannont goe through draws or cupboards. they do not have search warrants. you can stop then entering. if they threaten you or use threatening language or things you find offensive ring the police and have them arrested. all i can advise for now.