You can apply for an award of costs if anyone involved in your appeal has cost you money by behaving unreasonably, for example missing deadlines.
Gallwch wneud cais am ddyfarnu costau os oes unrhyw un sy’n ymwneud â’ch apêl wedi achosi i chi fynd i gostau trwy ymddwyn yn afresymol, er enghraifft methu terfynau amser.