If your complaint remains unresolved having contacted your Casework Advocate, please do not hesitate to telephone GBG Feedback on 03303 501265. You can also leave a voicemail by pressing 0 at any time and we will call you back if you provide a landline number and the best time to contact you. Please have your Client ID to hand. We aim to provide an acknowledgment within three working days and a full response within 14 working days by Email. If you have not received a full response within 30 working days and there is no reasonable justification for the delay, please proceed to Stage 3.