Sold an item and the buyer messaged me after I’d dispatched the item, saying that had they known it was Evri as the courier, they wouldn’t have purchased. Because they wanted Royal Mail.

I dispatched it 2 hours after the purchase was made.
They claim Evri parcels always arrive to them damaged. But they did not communicate this to me at all prior.

Then they asked if I can cancel the order after I’ve already dispatched the item.

I’m concerned the buyer is going to falsely report a problem with the item upon delivery just to force a return. Because the listing was no returns.

Where do I stand with this should the buyer try and claim there’s damage to the item when there isn’t.