No problem at all @lizrta I asked for a copy of an invoice from a certain company the other week ... (I emailed at 4.15pm on the Monday.)
The bloke from the company sent it just over 33 hours later, at 1.00am (in the very early hours of Wednesday morning.)
It didn't bother me, as I didn't see it til 9am (8 hours after.) It didn't wake me or anything. I don't see any problem at all. 
Only one time did I get wound up. I had bought an item from ebay on 1st December last year, and it hadn't come by 11th (when it was meant to be here.) It was for a gift for someone, so I asked when it would be here. The seller never responded to my message, so I messaged again 3 days later. (Now 15th December.) Still nothing.
I messaged ebay around 18th December, and asked what I could do as the seller had not responded, and the item was still not with me. Ebay gave me a refund within 2 days. Got no item but I did get the money back. I never asked for a refund, they just gave it me.
Then I got a ping on my mobile phone - a week later - on Christmas day afternoon, when watching a lovely festive film with my family after we'd had Christmas lunch. It was an email from this bloody seller. 'Why have you asked for refund? You never gave me chance to answer.' (I fucking did!) 'Answer with haste please, as I am not happy ebay refunded you.'
CHRISTMAS DAY at 2.30pm he messaged me. Now THAT was a piss take. I never responded. I just blocked him and put my phone on silent. But I was fuming for about half an hour. I thought 'what a twat!'
tl;dr you did nothing wrong @lizrta 