I thought I solved this issue a while ago, but It started up again. I signed up for JETS to help me with finding employment, it didn't end out working for me so I told them the course wasn't for me, and I wanted no further sessions, the problem was they didn't listen, I kept getting unavoidable messages I couldn't block and they don't have a number attached. I finally managed to complain enough and they finally stopped sending messages, but it started up again, and I still can't block them, does anyone know what I can do?
Also as a side note I contacted my mobile manufacturer (Samsung) and there was nothing they could do to help me.
As well as blocking texts by the phone number (which isn't possible in this case), it's possible to block those that contain a definable phrase or string of letters such as the name of the company or product.