Classic Aire Care

I had been using Sutter Plumbing for years, for tree root removal in my sewer line, with satisfaction.  I had Classic Aire Care/Sutter out October 1, 2018 to provide the same service.  On November 18th, 2018, I had to call Roto Rooter, and pay an additional charge to remove tree roots Sutter/Classic Aire had not removed.  Clearly the work done a little over a month ago was not done appropriately.  When I spoke with Classic Aire Care/Sutter, I was told the tree roots must have grown back.  I don't think tree roots can fill a pipe in six weeks, during October.