Caller: Someone called JC looking for a person they said I knew

Very suspicious

I missed a call but my iPhone said “maybe: JC Dia” as a caller ID. I don’t know what or who that is?
Google search of JC Dia comes up with a Facebook profile for an Asian boy with no further info and no connection to myself.

Says they are looking for a Helen McCrae, at one point the message stated she might be a neighbour. Somehow know my 'shortened' name I go by, not my full name which would be listed for address and phone. Have continued calling me for at least 6 weeks now, sometimes after 5pm, never confirm any business name. Also very suspicious about this.

Caller: Debt collection or spam

Says they are looking for a John Page. No idea who he Is, yet they knew my address. I am very suspicious about this.