Need some advice, phone won't disconnect from 3G

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I recently had my phone unlocked by a cell phone place in order to add the EDGE network. However I did a hard reset and I guess this got rid of the unlocked SIM card. Now I can only access 3G internet which I did not pay for. How do I get back onto the EDGE network?

Nevermind, I finally got it to disable. If anyone else is having this problem or is interested let me know.