I dont receive some texts

[trb]

When I text my friends they receive my text. When they text me back, they recieve wrong number and I dont see the message.

This has happened with more than 4 of my friends.

***Edited to add labels***

[FidoStephane]

When you say 'they receive wrong number'  you mean they are receiving a confirmation that they are texting an invalid number?

If that's what you meant, can they text you manually? (instead of replying to one of your texts)

Also, what phone model are you using?