my suppliers for gas and electric have been scottish power for 7 years, my gas is paid by direct debit but my electric is a pre payment meter. i rang and asked if my pre payment meter can be changed so i can pay by direct debit, i was informed this would cost £150.00 which i receive back after 12 months and £44 installation non refundable. this is shameful, is there a supplier i could change to that would not charge me for this option