Rydym yn defnyddio cwcis i wella eich profiad ar ein gwefan. Am wybodaeth am y cwcis yma a sut i’w dileu, darllenwch ein polisi cwcis.
Information on how to complain if you're waiting for a new line or a fault to be repaired.
Negeseuon a galwadau niwsans
Namau a phroblemau gyda gwasanaeth ffôn symudol
Namau a phroblemau gyda band eang a llinellau tir
Llinellau tir a cholli pŵer
Atwrneiaeth a rheoli biliau trydydd parti
Additional charges
ADR schemes act as an independent middleman between the service provider and the customer when an initial complaint cannot be resolved. You can use the Ofcom ADR checker to see which provider belongs to which scheme
