tenant-VERSUS- realestate.?

tempoinsane asked:

im having a fight about breaking my lease with my realestate, theyare not being resonable or following the tenancy agreement. iv been given advice by tribunal to take it further but have just realized i have lost a set of keys to a lock they put inside the door……how do i get around this problem without including the realestate, ….can a locksmith re do me a key, or will he have to change the whole locking device??? heeeeellllp!!!