No you cannot. I don't know where that person found their information. It should also be noted that you can only make an appointment for certain things, like signing up for benefits. If you try to make an appointment for getting a new card, you'll schedule a specific type of appointment which means you'll wait 1 to 2 months for the appointment. If you just need a new card or to change your name, it's best to walk in.
Yes you can
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