(a) Electric service may be discontinued on Monday through Thursday during the regular business hours of the utility. Service may not be discontinued on, or immediately preceding, a day in which the office of the utility is not open for business or on a public holiday. The utility may refuse to resume electric service so long as any part of the amount due remains unpaid, unless other mutually satisfactory arrangements are made.

(b) A utility may not discontinue service for nonpayment of service bills rendered or failure to post a required deposit until it has taken reasonable steps to verify that payment was not received or posted to the customer's account up to the day that disconnection is to occur. Receipt of a subsequently dishonored negotiable instrument in response to a notice of discontinuance of service shall not constitute payment and no further notice need be issued prior to discontinuance.

(c) Such discontinuance of electric service will not relieve customer of liability for any minimum charge during the time electric service is so discontinued.