Eseries / Communicators :: E72: Provider Charges For Unconnected Calls?

I have been using the same phone provider for the last 10 years with NOKIA 8250, Sony Ericson K550 and now E72. I typically have problem making outgoing calls where when I dial a number, there are no sound ( no dial tone, no voice mail, no busy tone, no sound whatsoever), so I figure the call never reached the telecom provider and just redial. It happens like 2-3 times a week for the last 10 years. I put up with it.

Right now, ever since I chnaged to Nokia E72, my provider has been billing me for all these unconnected calls. I filed three official complaints wiht my provider, they responded by resetting my account and refunding my charges. Right now they say they are totally convinced that the problem lies with my Nokia E72 and not their fault. I doubt anything going to turn up if I sent my phone for service to do diagnostics as the unconnected call occurs randomly.

Is there any setting in the phone that can cause such problem, because my provider says thay have record showing that the call was connected, and the other party had answered. My speaker does not making any sound, and graphics on the LCD also showing no status from phone provider during this occurence.

I believe I am going to be stuck in a limbo where Nokia care centre is going to blame phone provider and the phone provider is going to blame my phone.