When calling these telephone numbers, you must ensure you have the vehicle registration number, contact telephone number, make and model of vehicle and precise details of your location.
Wrth ffonio'r rhifau ffôn hyn, rhaid i chi sicrhau bod gennych rif cofrestru'r cerbyd, rhif ffôn cyswllt, gwneuthuriad a model y cerbyd a manylion eich lleoliad.