Contacts

Contact us

The customer helpline is open from 8 p.m. To 6 p.m. from Monday to Friday

Outside the customer helpline opening hours, please use the My OpenCall self-service function or leave a message and we’ll contact you during office hours the next day.

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    Contact details

    Telephone:
    +420 778 820 820,
    *88 for OpenCall customers

    Email:
    support@opencall.cz

    Address for written correspondence:
    O2 Czech Republic, a.s. – OpenCall
    Za Brumlovkou 2/266
    Praha 4, 140 22