I can fully sympathise with the OP. If the Orange texts are the only ones that come through regularly at anti social hours and are the only reason for him to change his behaviour with how he uses his phone, then he is fully entitled to feel aggrieved about them.

I am on o2 and only got gets during the day, but I do still find them annoying so I set texts from them and my bank to silent.
Which works perfectly I get the information from them but it does not interupt my day and I just see the text when I next look at my phone.