Locks Suck

so I left the house to go for a run tonight. Joanna locked the door behind her and locked the little lock on the bottom too.. when we came back the door didn't open.
I never received a key for that lock and nobody told me anything about not locking the bottom lock either. Since I went for a run i didn't have anything on me but my keys, no phone no phonenumbers. No idea when my flatmates will be back and if they even have that key.

I didn't have any other choice than to call a locksmith. He couldn't pick the lock since it's a 5piece something, so he had to drill it. So I have to get a new lock put in, all-in this little joke costs $65 emergency-call + $230 drilling the lock out + buying a new lock. F*ck F*ck F*ck.