Remove data plan from iPhone?

Ok, i want to add a iphone 3GS to my parents family talk plan, but i do not want to pay for the data plan (no 3G, only EDGE here) so i devised a plan, i would:

Add the iPhone to their plan, pay for the 1st month of data (just maybe 2 months), then, put my sim card in my samsung sync (and keep it there), unlock iphone, put pay-as-you-go sim in iphone, then call AT&T and tell them the iphone broke (i dropped it into the sea) and since i am no longer using it, can i get the data plan removed?

I asked a online rep and they said yes (then again, their probably from india), Has anyone tried this before?

What it would cost:
Iphone 3GS..........$200.00
Activation...............$26.00
2 months data........$60.00

Total (forgetting 10 a month for phone):
$286.00

I have a pic of the rep saying yes

http://yfrog.com/67iphonep

So, will it work or will they make me keep data/cancel plan?

 

i don't know if they will cancel your data plan you can only try.

 

Even if you cancel the data plan, you HAVE to have one to use the Iphone, and if you don't, you cant just get normal service, and even with NORMAL service, the iPhone will NOT work.

 

Just get a pay as u go iphone??

Or search ebay or something for unlocked sim free ones

 

if they said it could be done why are you posting the same exact question here?