So I just chatted with AT&T and they confirmed that extra fees were added 'accidentally'
"Samatha Oakes : Thank you for contacting AT&T, I can answer any inquiries you have. It is my priority to answer any questions you have about your bill.
ME: Yes. I received my bill this morning and I noticed several fees were added related to my iphone activation
ME: On 9/23, a customer service rep via chat confirmed that the activation fee of $36 would be waived as a one-time courtesy
ME: however, the bill shows one credit and three fees
Samatha Oakes : Okay, I can take a look at your account and your last bill to see what could be happening with the fees.
ME: ok
Samatha Oakes : I apologize for the wait.
Samatha Oakes : I am still needing a few more moments to look over your account.
ME: ok
Samatha Oakes : I do see how you were charged twice for the activation fee.
Samatha Oakes : I can get this taken care of for you.
Samatha Oakes : One moment while I adjust your account for you.
Samatha Oakes : I apologize for the wait.
Samatha Oakes : The adjustment is processing.
ME: Should both fees be removed? Since the AT&T rep confirmed on 9/23 that the activation fee would be waived as a courtesy.
Samatha Oakes : No worries, Mr. T.
Samatha Oakes : $159.09 was credited back to your account.
Samatha Oakes : This was another courtesy adjustment.
Samatha Oakes : For your frustrations.
Samatha Oakes : I waived the fees and then some for your frustrations.
ME: That is great. Thank you.
Samatha Oakes : Your time is very valuable to me and I want to ensure all of your questions and concerns are addressed to save you time from having to contact us back again in the near future. Is there anything else I can assist you with today?
ME: I'm just wondering how long will it take the credit to update on my account
Samatha Oakes : I am seeing your account balance is now $1.92.
Samatha Oakes : But it can take up to 72 hours to show.
ME: ok. thanks"
YAY!

So guys, don't forget to check for any mistakes on your new bill.