Tenants rejected to cooperate with my assigned contractor

[Bob Zhu]

Hi all,

I am a real estate investment beginner in Chicago. One of my properties needs to apply the basement waterproofing work, but the tenants do not cooperate with my assigned contractor. They said that they have to work during weekdays and cannot allow any people to do the job without their presence. They also reject to pay the rent if I do not fix the basement right away. Are they playing game with me? Any suggestions?

Thanks,