It would hhep us if you can tell us exactly what you wrote in that feedback, as there are feedback rules to follow.
If you mentioned anything about a refund, or a case that breaks those rules, and the seller can ask for it to be removed. Was the case rectified with a full refund on time? Sometimes items become lost in the post Royal Mail is not infallible, and this would not be the seller's fault.
Sellers have not been able to leave negtaive feedbacks for buyers for many years now and if left, it's cause for removal. This is because some sellers were abusing the system, even holding back some items before posting unless a buyer removed any negative feednacks they left.
