Why haven't I received text messages?

So I needed my iPhone to be repaired so for a week I was phone-less with my SIM card obviously taken out of my phone. A week later and I have got a new phone and put my SIM card back into the phone. But no new messages have been received even though I know I have at least had a few people send me texts that didn't know my phone was off. Although if I text my phone now, I can receive messages, I just haven't got the ones from when my SIM was out.
Does anyone have any idea how to recover these messages?

No possible way. Happened to me and rogers couldn't recover it. When the sim is out, it is not being powered so the receiver is off so yeah. It's like a wall when its off, it bounces off and goes away.

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