Megasurf - Only the customer pulls on the short end

Payments should be done by the 3rd. So even if you pay on the 3rd and you send them proof of payment that it has been done your fibre gets turned off. It then takes them 2 to 3 days to turn your line back on even though you have paid for the full month. When you question this they answer in a very clipped manner and say it is their system. Why should a customer be penilized for only receiving your salary on the Monday which was the 3rd of the month. You the transfer your monies and your line still gets cut even if you send proof of payment directly from your bank