Gone 2 weeks out of the month and our bill is higher than the month before

The month of November we went out of town for the 1st 2 weeks. We deliberately unplugged tvs, appliances, chargers-anything that plugged into the wall with exceptions like the fridge. The thermostat was set to 60 degrees so it wouldn't turn on while gone. All these preventative measures to have a HIGHER bill when we got back. Excel is a terrible company and monopolize the market-customer service reps are useless and do a run around as if theyre trained to not solve an issue.