Need urgent lock repair and key replacement service

Hi, I recently moved into a new home and discovered that one of the door locks is faulty and the keys are not working properly. I need a reliable locksmith to repair the lock and provide new keys. Ideally, someone who can also advise on improving the security of the doors would be great. Looking for a prompt and professional service, preferably within the next few days. Please bring your own tools and materials if possible.