Well, I didn’t actually, my hair’s a mess and I need to get it cut.
When we need something doing, but don’t do it ourselves, we have or get it done.
Here are a few examples:
I need to get my computer repaired – Il faut que je fasse réparer mon ordi
Bruce and Sheila had a house built in the country – Bruce et Sheila ont fait construire une maison à la compagne
A note of caution:
If you make someone do something, you are forcing them to do it even if they don’t want to! It’s better to say “I had him do something”
I had the gardener cut the grass – j’ai fait le jardineur couper la pelouse(c’est son métier)
I made him cut the grass – il ne voulait pas! je lui ai forcé!