If you're sending it directly to someone else, there's no concept of chargebacks. However, if you are sending it to a smart contract, the contract can implement

If you're sending it directly to someone else, there's no concept of chargebacks. However, if you are sending it to a smart contract, the contract can implement refund functionality. Admittedly, I don't know of any smart contracts that have this functionality today but as smart contracts gain a wider audience (hopefully), people will "vote with their wallets" and support smart contracts that have some dispute resolution built in and other consumer-friendly practices