I need to get my Stirella (No Problem) SX8040D Simac steam generator iron f?

I have a Stirella(NoProblem) SX8040D Simac Steam station iron that need fixing. The button no longer seems to work. I just get continuous steam. I have had the iron for 3yrs approx. Have tried the telephone No on my paperwork but the number no longer exists. Cld you help with some info please.