DYI thaw frozen line

[jasinclair71@gmail.com]

My daughter and partner live in Pinecliff down Coal Creek Canyon. They have a wellhead about 75 yds down below their home and it’s been diagnosed that their line is frozen. No water for 2 weeks. They have contacted 3 well companies with little to no luck getting someone to come. The line is plastic and are looking for any DYI ideas. Thanks