CellularOne RIPOFF 30 day notice to cancel service. Seminole Oklahoma

I started with Centennial years ago. They required a 30 day notice of cancellation.I typed up a "document of cancellation" and dated it. I had one of the staff members sign MY copy. I'd heard too many stories of cancellations not being acknowledged.
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A close friend terminated service at Nextel. Same deal. 30 day notice, he also obtained a dated,signed acknowledgement from Nextel.
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We're both with Verizon right now. Verizon's policy:"You may cancel without penalty in the first 15 days, paying only for servic received. Termination (by the customer OR VERIZON!) before end of contract:(after the 15 day 'trial' period terminates)the customer pays up to $175.00 per phone number. All terminations when month-to-month is reached (contract fullfilled)will become effective on the last day of that billing cycle."
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To read the entire contract is scary! 12 pages of small print. Within this "small print" is an automatic agreement for the customer to submit to "Mandatory Arbitration". Now that's a real deal. THEY cooose the 'arbitrator'.
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It is my considered opinion that most cellular carriers deliberately make their respective plans, billing, and information released as confusing as allowable. 9 out of 10 of their employees are basically without any product or procedure knowledge. They're just as confused.
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The entire contract for the most part does nothing but limit the options of the customer. It does, however, give the carrier carte blanche on most anything they want to do. No changes or disagreement with the contract is permitted. Not even one word. Don't like the contract? "Don't let the door hit you in the a$$. See ya!"