Thus ends my exercise streak

I’m pretty proud of myself that I actually have done my mile a day walking for the past week and a half. Most days it’s been 2 miles, to make up for the first two that I missed, and Sunday, which I took off. Yesterday as I was just finishing up with mile 2, the treadmill sped up considerably, nearly making me lose my balance, and then just stopped. What? So I turned it off, then on, and pushed start, and nothing. Same story today. No treading action on the treadmill. What am I going to do now?