Yesterday I looked at the record you sent me last week. I saw on the sleeve that you wrote/had written "no payment is necessary for you" but I had paid 50 usd through discogs to get it.
So it would be nice to make me a refund of the postage
Is it better like that
in fact :
I had paid for the record past perfect
you wrote the message past simple or past
perfect
you sent past simple
looked saw the message past simple
ask for a refund
I am not sure if I can write "had written" instead of "wrote" because of "had paid" that comes next. if both are past perfect we can't know which comes first