You can submit a complaint with regard to a natural gas bill in one of the following ways:
- personally at the Gradska plinara Zagreb - Opskrba Consumer Centre, Radnička cesta 1, at the counters for submitting complaints,
- by submitting a complaint request with regard to a bill or prepayment instalment at Zagreb Holding Customer Centre at Ulica grada Vukovara 41.
- by sending a complaint request to fax no. 01/6429-470 or via e-mail address opskrba@gpz-opskrba.hr,
- by phoning the Customer Information Centre of Gradska Plinara Zagreb - Opskrba 01/6184-601
Example of bill reference information required for submitting a complaint
