We're doing some work to improve our website, so we've had to take it offline for a little while. Don't worry, it won't be down for long. If you need to get in touch with us, you can talk to us on Facebook, chat with our team on Twitter, or call our customer care team on 0330 678 0679. If you have an emergency please contact us on 0800 085 8033.
Rydym yn gwneud gwaith i wella’n gwefan, ac felly rydym wedi gorfod mynd â hi all-lein am ychydig bach. Peidiwch â phryderu, ni fydd y wefan o'r golwg yn hir.
Os oes arnoch angen cysylltu â ni, fe allwch siarad â ni ar Facebook, sgwrsio â’n tîm ar Twitter, neu ffonio’n tîm gofal cwsmeriaid ar 0330 678 0679. Os oes gennych argyfwng, cysylltwch â ni ar 0800 085 8033, os gwelwch yn dda.
Achosion brys (24 awr)
Ymholiadau ynghylch Biliau
Cwsmeriaid Busnes