Verizon payments by check? ummmm....no

A "Need-to-Know" bit of informaiton included on the latest Verizon Wireless bill states:

"Your check authorizes us either to make a one-time electronic funds transfer (EFT) from your account or process as a check. An EFT may be withdrawn from your account the same day you make your payment and your check is not returned to you. ...If payment is returned unpaid you authorized us to collect an additional $25 fee through EFT from your account."

Really? I don't see anywhere on a check where if says you have open access to deduct whatever funds you want from my account through the ACH. I also doubt that is within Verizon's rights to debit through ACH more than the account holder has specifically authorized. I don't have a problem with them converting a check to ACH, as it cuts down on processing time for them, makes for less waste, etc... However, if my check bounces through my own fault, and Verizon decided to deduct some extra $$ to cover the cost of dealing with my bounced check, then they can forget it. There would be no way in hell a bank would allow that to happen to a customer account. Also - use of my cellphone does NOT constitute agreement....FU Verizon!