Constellation Energy Supplier Extra $150 bill for no services renderred Houston Texas

I was looking for a lower and lesser inflated electric supplier.  I found one but another and another interrupted my agreement.  The main inerruption was by Constellation.  There were no services  renderred and there was an anti-trust correspondance with  Eligo and Direct Energy suppliers...each offering a lower rate  all guaranteeing no cancellation fees.  Finally all 3 demanding cancellation  fees, one after another and all for no services renderred.  I contacted Constellation  and threatened them with legal action.