Unreliable service all of last winter. Often arrived long after the 12 hour post snowfall contracted amount. After huge snowfall last winter, did not arrive for almost 36 hours--no phone call, no contact to explain. When called, said there was a problem with a crew. Have extended increased their charges to customers by adding additional monthly payments to cover periods when little or no snow--November and April-with no notification of the increased months of payment to be charged.