How do I unblock my phone?

How do you unblock your phone number for a single phone call?

• Right now, my phone number is technically blocked (meaning that nobody can see it). I need to call my local walmart. But whenever I do, a message comes up saying that this person does not wish to speak with callers who block their numbers. How do I unblock my number for just that one call? Do I have to type in a combination of numbers before the actual phone number? Please suggest a free solution. I don't want to pay for every unblocked call I make.

• Answer:

  Everytime dial *82 to unblock it and *67 to block it. No it should be free but check with your phone provider for hidden fee's or anything.