> All I did was miss three calls because I left my phone at my friend's and when I called they'd given the job to someone else, how unprofessional"

What you have described is very different from:

"Dude calls every fucking day for like four weeks straight;"

I doubt you'd leave your phone at your friend's for a month, and if you were uncontactable daily for a month then, yeah, I can understand them giving the job to someone else.