There isn't a telephone number. We all help on the community or if it is a specific account query you can contact an agent online. Do you want to tell us what the issue is and we can try and help? Lucy
giffgaff does not have a customer service number. Everything is online only.
General queries ( please do not post personal details ) can be submitted to the help forum for answers, suggestions and advice from community members. Eg you need help with phone settings,going on holiday, or can't make calls etc.
Specific account details are handled by giffgaff agents. eg Payment details or account problems.