I got a couple of calls from this number and finally answered it. It was Purple Heart asking for donations. I agreed to set something out, and they came the day they said they would and even left me a receipt.
I called this 321-805-4600 number back (from a different phone) to inquire who was calling and a very nice lady answered and assured me that she (& Joe) make calls on behalf of Purple Heart. I mentioned the posting above about scams re payday loans and she seemed genuinely surprised and again assured me that she was from Purple Heart.
I think the above posting got it wrong associating this number with other numbers from a payday loan scammer.