Form and rules
How it works
Have + object + past participle commonly means arrange for another person to do a service: I had my hair cut.
Get + object + past participle is a more informal alternative in many contexts.
Change the tense of have/get, not the past participle: I'm having it repaired; I had it repaired; I'll get it repaired.
The structure can also describe an unwanted experience: She had her phone stolen.
Do not confuse have something done with doing it yourself; the structure normally implies another agent or an event affecting you.