It reminded me of one situation that happened to me & my friend some years ago. On a New Year's Eve i've sent him an sms with wishes like 'I wish you health, happiness and once agan:money'. Probably due to the smses overload on that night some error happened. When i've finally met him he told me that my joke wasn't funny. I didn't know what he's talking about so he explained: On NYE let's say 8pm he receives an sms from me with wishes, nice, he writes some for me as well. Couple of minutes later he receives same sms from me. Weird, but maybe i've sent it twice. After some minutes another one comes in. Then he thought it's some kind of a joke, like 'once again:money' then next sms, 'once again:money'. He told me that he was getting smses all night long and couldn't sleep, had to turn his phone off.

He received like 50 same smses because of the network error.