|Today my English sucks particularly so I'll try with an example, hoping to express myself a bit better than a baboon.
Let's put the two cases at work, case 1: each package must be confirmed then refunded, case 2: as it is now, refund and then eventually take it back. We have Alice, with a legit refund, and Bob, which has a package that cannot be refunded. Two scenarios: 1 everything is 100% operational, 2 there is some problem in the checking office such that they have a month of job late.
Scenario 1, Case 1 - Everything operational, every package checked and then refunded if eligible.
Alice sends her package back. In a couple of days she receives her refund. She's satisfied.
Bob sends his package back. In a couple of days he receive notice that he cannot be erfunded. He may have other complaints but he's served.
Scenario 1, Case 2 - Everything operational, instant refund and then check.
Alice sends her package back and gets her refund instantly. She's overjoyed and needs no more work.
Bob sends his package back. He receives his refund instantly, then after a couple of days Amazon takes it back and notifies him. He may have other complaints but he's served.
Scenario 2, Case 1 - Office not operational, every package checked and then refunded if eligible.
Alice sends her package back. After a week she has'nt received the refund, she grows anxious and nervous. She opens a ticket on the support. After two weeks she's distressed, the interactions with the support are intensifying. She's becoming distrusting and angry, possible bad publicity. After three weeks the situation is escalating, she's putting bad reviews and angrily threatening legal actions, support calls are mor than daily. After a month she's served but very dissatisfied and will probably look for competitors the next times.
Bob sends his package, does not receive anything, does the same thins as Alice and then his refund is negated. He's angry like a viper, starts cussing Amazon everywhere, won't buy again.
Scenario 2, Case 2 - Office not operational, instant refund and then check
Alice send her package, receives refund. She's happy and satisfied. After a month Amazon knows her refund was legit. No work to be done.
Bob sends his package, receives his refund. After a month Amazon knows he wasn't eligible and taks the refund back. The customer may have other complaints but he's served.
As you see the Case 2, which is the as-is situation, is less vulnerable to bottlenecks and that improves the time to completion of the operations with respect to the customer.
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If you think 'goto' is evil, try writing an Assembly program without JMP. -- TNCaver
When I was six, there were no ones and zeroes - only zeroes. And not all of them worked. -- Ravi Bhavnani