I would submit a hold mail card just for your last name
I am a carrier it is generally when you put a change of address in can take 10 business days because it has to go through a re-routing process that is why it takes so long to receive mail someone could have also live at the same address and put in a family change of address even if you weren't apart of the change of address that just means the individual selected family which means the entire residents can be included in that change
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