Who called from 7632373476

From the pink cancer fund

Calls, never leaves a message, when I pick up, I get recorded music, and then dead air, and then I hang up without anyone ever coming on the line.  Repeat calls.  When I try to call them back, I get a recording that does not identify them but just says that they're not available to take the call, and to leave a name and number

Once again, although they were asked to stop calling, they continue to.  Who are these people????