I ordered an Aspire Odan Mini sub ohm tank and was accidentally sent the full size version instead. I have mods the tank will fit on but bought the mini version specifically for a smaller mod in my rotation. Customer service responded promptly to my request for an exchange and after I provided a few pictures verifying that I was indeed sent the wrong tank Element Vape promptly shipped the correct tank same day. The best part? Because it was a mistake on their end they allowed me to keep the original tank! I was not expecting this at all and am very pleased with how Element Vape handled this. Will definitely remain a loyal customer.