A friend of mine wants to prank call a suicide hotline?

Question

A friend of mine wants to prank call a suicide hotline?
can they trace his call if he uses a cell phone and uses to block his number pls answer

Answer

DONT DO IT!!! yes they can, me and my friend did that even with , they called back, but it was the jewelry hotline, not suicide, they even said if they catch us again, they will have us put in juve!!!! tell your friend not to do it