Getting abusive texts from this number

Hi, Just saw your post there, i found it by googling the same number as this person has been texting me for the last 40 minutes about an add on donedeal, just thought i would let you know this person is still around.

Same story getting text MSG al day  about add on done deal

Had the same problem with this clown,they got my no. on done deal and went on to call me 'waste of space'.When I didn't text back they went on to send me 6 messages mostly calling me a 'liar',How do we track down these nuisance numbers?

I am getting horrible text messages form who ever this guy is, it started at 2.30am this morning and has has been incessant all morning.....
He got my number off an ad I have up on DoneDeal.ie
I did the trick of putting the number 5 before the main body of the number (Rupert Murdoch style) but unfortunately he does not use his name in the out going message.
What can be done to get this guy help because he most definitely sick in the head!!!!

Hi guys. Same story there. First I replied to the txt. He said he wants stuff valued. And when the day wasn't suitable for me- it started. Liar, waste of space, saddo and everything else. texted that will not reply to txt messages. Got 6 or 7 more afterwards even without responding to them. Now he texted me again after 2 weeks. Will not bother anymore. But as Adam said- would love to get my hands on him :)