Why didn't you text me last night?
What? I sent you three or four messages!
I didn't get any of them. I was waiting for you to text me the address of where the party was and I never got your message.
Why didn't you just call? I hate sending SMS messages.
Well, because I didn't have any credit on my phone. I used it all up this month.
I thought you had an unlimited SMS plan?
I do, but if I don't have any credit in my phone, it won't let me call or send messages.
No wonder you didn't get my texts!