So I ordered like 12,000 earthworms, what to do?

don't know about refund policy...check with visa for that..also check with website about possible return policy...if not you can always box the little fellas up by the dozen & sell them to fishermen & gardeners...I had to pay $3.50 for a dozen last week to take my dad fishing for father's day.. so you may be able to make some money back that way...just make sure to put them in moist, not wet good garden soil ...empty margarine bowls make great containers and they should be refrigerated..put an ad in the local paper & you should do ok