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Disputing an electricity bill with Endesa by phone
How to challenge an estimated or duplicated Endesa charge, what the agent needs, and how to get a 'reclamación' number.
What they will ask
- Account holder's DNI/NIE
- Contract number or CUPS (on the bill)
- The invoice number you dispute
- Your meter reading, if you have it
Have this ready
- The bill with the CUPS and invoice number
- A photo of the meter reading today
- The previous bill for comparison
Typical wait: 10–20 minutes · ☎ 800 760 909 (free)
What to say
Quiero reclamar la factura número…
I want to dispute invoice number…
La lectura es estimada; la lectura real del contador es…
The reading is estimated; the actual meter reading is…
¿Me da el número de reclamación?
Can you give me the complaint number?
Step by step
- Call 800 760 909 and choose “facturación” or ask for “reclamaciones”.
- Identify with NIE and the CUPS code (starts with ES, on every bill).
- Explain the problem in one sentence and give the invoice number.
- If the reading was estimated, give the real reading; they can issue a corrected bill (“factura rectificativa”).
- Ask for the número de reclamación and the deadline for a response (by law, one month).
- If unresolved after a month, you can escalate to the regional consumer office (OMIC) with that number.
Or let the assistant make this call
Describe the task, put your phone on speaker, and confirm details in chat.
Example task: Dispute Endesa invoice 2026-10-X for €212: the reading was estimated, the real meter reading is 45,210 kWh. Ask for a corrected invoice and the complaint number.
Updated 2026-11-10