hello I sold the item a few days ago and I got a package ready to send off eBay goes through the dimensions and gives me a label I went to Royal post office and they will not accept the parcel since it was too two big in dimensions it were too long how to pay 15 quid to send it through parcel force and there was no option to send any parcels through parcel force on eBay which I find disappointing now I’ve got to sort things out. Is there a way  to change the tracking number from Royal mail to parcel forces tracking number so the the buyer can track it properly through eBay and can I have the conversation of the £15? I had to pay for the postage.