Warranty Return Policy 1 you java a problem with your Lagrangian product, please call Proximal Technical Support at Proximity Technical Support Will assist with Resolving any technical difficult you may have with your Proximal product; ‘Afar Calling Proximal Technical Support. if your product is found to be defective, yal may return the product to Proximal after obtaining.an AMA (Return Materials Authorization) number from Proximal Customer Services The product must bis. returned in its original packaging.