Both drill holes. If I'm sold a hacksaw as a drill, then I've got rights to a refund.
Doesn't really apply if you just go marching into the store and, rather than asking what they'd suggest for the job they're trying to do, you just demand they sell you a hacksaw RIGHT NOW then take it home and try drilling holes with it. We never "sold" Lever as such, they came and demanded we sell him and refused to take no for an answer.