Update:
Gomibo contacted me after 1,5 day and assured about resolving the issue. Indeed everything was resolved in few days and a new phone was delivered. The service although not the fastest at the beginning, was solid and reliable.

Old message:
Gomibo claims to have client service but its impossible to get in contact with them. Package containing mobile phone arrived as empty. So far no answer to my messages. I wait for their reaction so BE AWARE!