there isnt a giffgaff customer service..
just make a topic of what problem you have and the giffgaff community will answer your question..
if it still doesnt solve your problems then try contacting an agent
feel free to show some kudos love..
is there a customer service number for giff gaff as cant find one anywher??
If you have an account problem, then you can contact an Agent here ask an agent If it's not account related problem, you can ask for help here.