Hi, having a bit of trouble and probably being an idiot but here goes. Sold an item with free postage to avoid using eBay’s new system. They prompted me to use their postage which i wasn’t planning on doing as what they were suggesting wouldn’t have covered the item and in the app I couldn’t figure out how to change it, before accidentally pressing “get postage label” which purchased it for me. Item instantly marked as dispatched so couldn’t cancel. Decided to refund buyer and start again but I’ve been charged £8.50 for postage and can’t figure out how to get a refund. Any suggestions welcome! cheers