15 full day notice required to disconnect electri supply

Electric supplier company's employee come at our home with cutter in their hand for bill recovery. They threaten us, supply will be disconnected if the bill is not paid on time. But, this not a lawfull job. As per Maharashtra electric regulatery commission rules and regulations,2005 section 15.2.5 to disconnect our electric supply, due to failure of bill payment or for any other reason, company should give us 15 full day written notice. The important thing is that the notice is not a part of bill.It should be sent separatly.