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).
A: Although Amazon doesn't officially list a customer service number, according to Slate, its customer service number is 800-201-7575, as of 2014. Slate acquired this number by requesting it from Amazon's corporate headquarters. GetHuman also suggests calling 866-216-1072, with extension zero, to reach a customer service representative, as of 2014.