Then you will want to refund your customers first: Purism is more infamous for not honouring their policies; dismissing refund emails; and offering store credit instead.
No amount of regurgitated blog articles is going to obfuscate the broken trust between you and them. Those betrayed customers could have generously praised Purism if it were not for such flagrant disregard of their funds and your own promises by tampering with the return policy.