It does say unlimited m2m calls, however if you make them after day hours, you get charged the minutes against your night and weekend minutes, but if you do it during the day they don't charge them against your anytime minutes.
The customer support phone number of Energy Assistance Minnesota is +1 507 328-6508/ 800-889-4970 (Click phone number to call).
Phone Contact Numbers. There are customer service hours listed for business, construction and property management departments, but no hours are listed for residential TXU Energy customer service. That likely means the customer service department is open 24/7. Residential Customer Service: 1-972-791-2888 or 1-800-818-6132.