Best-Ex

About Best-Ex

Independent advice, delivered by an experienced customer relations practitioner.

Best-Ex Consultancy is a director-led customer experience and CRM consultancy founded in London in 2020.

Founder and director

About Adile Sumer

Adile Sumer has more than a decade of experience across customer service, customer relations, customer experience, and consultancy. Before establishing Best-Ex, she worked in premium automotive and service operations for organisations including Volvo Car Turkey, Borusan Otomotiv, and Otokoc Otomotiv.

Her responsibilities included complex complaint management, customer feedback and Net Promoter Score analysis, third-party customer care supervision, CRM improvement, stakeholder coordination, and the training and coaching of customer-facing teams.

Adile's approach connects customer evidence with the practical realities of systems, processes, and team behaviour. She focuses on clear findings, workable recommendations, and effective handover rather than abstract advice.

Qualifications and professional development

  • Master's degree in Marketing, Istanbul University.
  • Bachelor's degree in International Relations, Canakkale Onsekiz Mart University.
  • Customer Champion Train the Trainer Programme, Volvo Car Corporation.
  • CRM Training, Borusan Otomotiv.
  • After Sales Institute Training, Borusan Otomotiv.
  • Strategic Sales Techniques Training, Otokoc Otomotiv.
  • English: full professional proficiency.
  • Turkish: native.

Working principles

How Best-Ex works

Evidence before assumptions

Recommendations start with available customer feedback, workflows, records, and stakeholder knowledge.

Practical scope

Every engagement defines the problem, outputs, responsibilities, and limits before work starts.

Direct senior involvement

Clients work directly with the consultant responsible for delivery.

Respect for confidentiality

Customer and client information is handled only for the agreed purpose.

Capability that stays with the client

Documentation, training, and handover help teams sustain improvements.