Having been involved with chargebacks from both the consumer and company perspective, for the company, it can be really frustrating when customers chargeback without ever trying to contact you.
Often, the company is happy to rectify the situation if you contact them, because like you said, chargebacks can be expensive per transaction.
In my experience, sometimes consumers will run a chargeback even for legitimate purchases. For example, a spouse will run through a credit card statement and do a chargeback if they don't recognize a purchase, without even checking with their partner. Then, the credit card company often sides with the consumer despite evidence, and if you sold a tangible good, you're SOL.
Often, the company is happy to rectify the situation if you contact them, because like you said, chargebacks can be expensive per transaction.
In my experience, sometimes consumers will run a chargeback even for legitimate purchases. For example, a spouse will run through a credit card statement and do a chargeback if they don't recognize a purchase, without even checking with their partner. Then, the credit card company often sides with the consumer despite evidence, and if you sold a tangible good, you're SOL.