Complaints are multiplying on social media and online forums, with consumers reporting sudden increases of hundreds or even thousands of euros. Galp states that since September, customers have not received payment bills because the company’s contracting and billing platforms have been migrated to a single system.

According to Galp, customers have not received bills since September 2025 due to a change in the contracting and billing system that consolidated everything into a single system.

Amounts payable

In some complaints, consumers report that the amounts are linked to incorrect estimates, poorly processed readings, or account adjustments accumulated over several months. However, there are reports of customers submitting actual readings, but they were not taken into account.

Communication problems

In addition to the high amounts owed, customers complain about difficulty contacting the company’s customer support; in addition to long waits, they may not even be assisted by a representative. Contractual errors in the ‘Mundo Galp’ mobile app are also noted, as is the inability to review prior invoices after the system change.

Galp has introduced phased payments and has issued vouchers to its customers, yet some consumers are considering switching their energy supplier.