Last updated: 1 October 2026
Our commitment
We aim to provide an excellent service. If you are unhappy with any aspect of it, we want to hear about it so we can put it right.
How to complain
Please write to us at contact@sumentic.co.uk or at our registered office: SUMENTIC LTD, 7 Suite, 47 Vallance Road, London E1 5AB, marked for the attention of the director. Please include your name, contact details and a description of the problem.
What happens next
- We will acknowledge your complaint promptly, normally within five working days.
- We will investigate it fairly and review the relevant work and records.
- We will write to you with our findings and any proposed resolution, aiming to do so within eight weeks.
Escalating to AAT
If you are not satisfied with our final response, or we have not responded within a reasonable time, you may refer your complaint to the Association of Accounting Technicians (AAT), our professional and supervisory body. Details of AAT’s complaints process are available at aat.org.uk.
Our professional standards
We follow the AAT Code of Professional Ethics.