If they've rang you after ten or half ten on a "school night" then they deserve to have YOU ringing THEM NOW!! Just do it now and wake them up. It will make you feel a whole lot better even if you don't know who it is. Remember to withhold your number first though, just in case.
they are very nasty txt every time and its really ******* me of they send anytime to they rang me once and i told them i would get the police invo but they just laughed but did nt know there voice
You deffo need to call your network 2moro and check they can block calls and texts from the one number. If it's someone that's got a grudge though they are a bit thick if they forget to withhold their number. If you do get it blocked they might withhold and still annoy you. Don't want to look on the dark side but could you change ur mobile if this happens hon? You need to ask ur network about these possibilities. Hope this helps.
PS my curious nature got the better of me and i tried it. It said number not recognised.