Who called from 6103512363

Caller listened after I answered but didn't say anything. Then tried to hang up a couple of times. I stayed on the line a minute then hung up.

Phone rang four times and they hung up when I answered the phone.

called and left no message on machine. Has called the past 3 days. When you call the number back there is  recording stating "this number can not receive call" ANNOYING!!!

guy said he's collecting for Allentown Fire Company

That is right baby!   Allentown Fire Fighters Local 302.   Activity Packs!   Whooo!   Whooo!     Looking forward to calling you later this week.