RAIND CHARGES *****............... ?

Rain inflated more money on my bills after which i have requested two weeks in advance for them to cancel my 5G, i had paid 699 from the 19/03/ i unplugged it 30/04. i was expected a prorata from the 19 to the end of the month 03, given the fact that i paid full amount before, that would have been set for the whole april