• The complaint shall be filed within 60 days from the date of issue of the invoice unless it becomes apparent that the user is unaware of the disputed invoice. 
• You will receive a reference number for your complain via SMS or E-mail with details. 
• Complain processing duration will be sent via SMS or e-mail. 
• Complaints will be processed within 5 days.
• When your complain is solved, notification will be sent via SMS or E-mail. 

You can also submit requests / complaints via the following channels:

• Calling GO Customer services number: 17777.
• Visiting any of GO shops.
• You can also submit your request or complaints through GO website  after logging to your Account or via ( Email ).