Non-functional deep tubewell

The PVC Pipes in our apartment’s deep tubewell got stuck up as the submersible pump got burnt, as a result we are unable to pull out the clogged pipes and reuse the deep tubewell. Mechanics have tried with detergents and caustic soda but failed. Even chain pully was of no help. Please suggest a viable remedy.

Kanak Kumar Das
Kolkata-700040

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