How can i get help to access a house that i pay for that people have taken control anf the police are not helping

I have paid for my house at the maktab.i work outside riyadh just to come home and find locks changed and when i knocked i found people inside.asking them to come out they assaulted me and i called the police and i was unable to get help.i went to the maktab of the house they told me its a police issue.i havent accessed my house for days and i keep calling the police but im not getting any help