Please tell us what you want to complain about. If Ofcom can’t deal with your complaint, we’ll tell you who you should contact.
If you’re confused by call charges or don’t know your 03 from your 0845 numbers, then we have the perfect guide for you.
Want to find out about broadband, mobile, TV and radio coverage in your area? Try our new Interactive Map
If you have a cordless landline phone, it's unlikely to work in a power cut, even if it's fully charged. Find out more.