This product was advertised as a replacement/upgrade for my Mag Lite Flash Lite. Upon receipt it was clear that it wasn't as advertised as it didn't even fit my 3 cell flash. I received permission to return it and the seller emailed me today that my return will not be accepted because the package was open. How else can I install it if I haven't opened the package? I then replaced all the parts back in the original packaging before returning and now they are telling me they will not authorize my return? That's absurd. Please fix this for me. I just want my money back and will never order from this company again. Richard Carouso