Bellbran said "For information.
As we are at the end of the Equal Payment Plan year I noticed that I had a $860.00 credit. I am not really happy about giving Manitoba Hydro an interest free loan. I know that they will alter the payment to reflect the credit but that is not the point.
You can call Manitoba Hydro 1-888-624-9376 and request a refund. It will take them up to 4 weeks, however your money will be returned. Maybe Manitoba Hydro should estimate a little more accurately. In the Past 20 years have I actually owed them money once and they wanted it immediately. "
Unless you agreed to accept a rebate on future billing without paying interest, you are out of luck. And, I am guessing that Manitoba Hydro i:ncluded that in their fine print.