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Diego BelmonteDB
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Diego Belmonte

@diegobelmonte

Support Operations Specialist at ONYX CENTERSOURCE who reconciled hotel commission and payment data across ~160 COB cases in a day.

Mexico
Message

At ONYX CENTERSOURCE, I processed Close the Loop cases by entering hotel reservation data from PDFs into internal systems. I also reconciled hotel Excel files with internal records, correcting commission and payment data across ~160 COB cases in a day.

During assigned workloads at ONYX CENTERSOURCE, I matched ~450 hotel property records to the correct profiles to ensure data accuracy.

At MARRIOTT CUSTOMER ENGAGEMENT CENTER, I handled member reservation and loyalty inquiries within SLAs. I investigated missing points and tier-status issues, coordinating with hotels and internal teams to correct reservation and account data.

In customer service roles at CONCENTRIX and TELEPERFORMANCE, I investigated and documented cases, resolved customer issues, and followed established procedures. At TELEPERFORMANCE, I also acted as a Subject Matter Expert, supporting peers with policy questions and handling escalations.

Experience

Work history, roles, and key accomplishments

OC

Support Operations Specialist

Onyx CenterSource

Nov 2023 - May 2026 (2 years 6 months)

Processed 10-15 Close the Loop (CTL) cases daily, entering hotel reservation data from PDFs into internal systems with high accuracy. Reconciled hotel-provided Excel files with internal records, correcting commission and payment data across ~160 COB cases in a day.

MC

Customer Service & Sales Representative

Marriott Customer Engagement Center

Jul 2022 - Oct 2023 (1 year 3 months)

Handled ~50 inbound calls daily from Marriott Bonvoy members, resolving reservation changes, cancellations, new bookings, special requests, and loyalty inquiries within SLAs. Investigated missing points and tier-status issues, coordinating with hotels and internal teams to correct reservation and account data.

CO

Customer Service Representative

Concentrix

Mar 2022 - Jun 2022 (3 months)

Handled 30-40 inbound calls daily from Uber Eats delivery partners, resolving order, delivery, location, compensation, and app issues. Troubleshot the delivery-partner app and processed order adjustments or cancellations, coordinating with restaurants to confirm details and operating status.

TE

Customer Service Representative

Teleperformance

May 2021 - Feb 2022 (9 months)

Handled ~60 inbound calls daily from Kohl's customers, resolving online-order, delivery, item, and credit-card account issues. Processed customer resolutions including Kohl's Cash compensation, card replacements, name changes, and late-fee support while following security and compliance procedures.

Education

Degrees, certifications, and relevant coursework

CI

CET 1 "WALTER CROSS BUCHANAN" — INSTITUTO POLITÉCNICO NACIONAL (IPN)

Technical Studies, Systems Analysis

2017 - 2019

Pursued technical studies in systems analysis but did not complete the program.

Tech stack

Software and tools used professionally

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