not groundhog day groundhog bug

My cell phone provider had a bug. When my credit was all used up which happened two times within four months, the phone would bomb me with messages saying “the message couldn’t be send, check your credit…”the message couldn’t be send, check your credit.” No matter what I did I couldn’t stop those messages from coming. I tried deleting all the messages, I turned the phone off and on again. But the messsages still kept coming.
I had received at least 30 messages and another 20 after rebooting. It only stopped, when I removed the SIM card.

Some months later, when again my credit was up, the message bombing started, again. But instead of 50, I only received 7 and it stopped all by itself.