Mahadiscom / Mseb / Msedcl — Illegal bill

I have get new connection, i also paid quotation amount but after various call and request the electrician of mscb demand money for footing of new meter. And also fitting too late and now i have seen my bill is 450rs i.e.from the date of quotation...but i have use only 13 unit for this month from the fitting date. The electrician already provide late service for meter fitting...