Ohio Revised Code|Section 3937.33 | Cancellation procedure.

                                                
An insurer may cancel an automobile insurance  policy at such time prior to its expiration for such reasons as  may be permitted by section 3937.31 of the Revised Code, by  mailing to the insured, at the insured's last known address  appearing on the insurer's records, a notice of cancellation  pursuant to section 3937.32 of the Revised Code. If such notice of  cancellation, for a reason other than nonpayment of premium, does  not contain an explanation of the reason for cancellation and the  information upon which it is based, the insurer shall, within five  days after receipt of the written request therefor by the insured,  furnish explanation to the insured in writing. Prior to the  effective date of cancellation, the insurer shall refund to the  insured any premium and other sums which may be due the insured. 
Upon compliance by the insurer with all requirements of this  section, such automobile insurance policy is cancelled on the  effective date stated in the notice of cancellation, except as  otherwise provided in section 3937.35 of the Revised Code. In the  event of the insurer's failure to comply with any requirement of  this section, such cancellation shall be ineffective and the  policy shall continue in force until such time as it is cancelled  or otherwise terminated pursuant to law and the terms of the  policy.