Replacing old sealant in bathroom

Looking for authorised workers to replace old and lay the new sealant in two seams between tile in bathroom in private apartment (old one has changed its colour). Small one-evening job, but we expect to deal with professionals with necessary qualifications acting on behalf of construction firm. Location - Gamle Oslo. Write your suggestions about price and suitable time with the contact number on email. And i´ll call you back after considering your request. Thnx in advance!