Hacked Sim Card For Sidekick 09 My At&t Sims Card Has Been Secured Lock To A Sidekick 2008!?

My at&t sims card has been secured lock to a sidekick 2008!? - hacked sim card for sidekick 09

Help! who said: "They have the security of the SIM card blocked. Please contact customer car for the PUK code. Is there a way to untangle the SIM card or a way to unlock my sims card lock, which securely ? help, thank you.