Evri complaint: International parcel cannot be tracked

I have sent a baby kit from Liverpool to my sister in Greece. It was supposed to be delivered by Monday.

Evri says delivers through a third party in Greece but I couldn’t find anywhere any information about who this might be.

I tried the tracking information but couldn’t get more info. I tried the chat but as soon as I put my tracking number it sends me to the website as it is an international parcel!

I tried calling-the first number after I passed the first identification with 8 digits of my parcel and choose mine out of more parcels it then says it is an international parcel and advises to press 1 to leave a voicemail and as soon as I do the call disconnects immediately as many times as I called.
The second number asks me an order I’d that doesn’t correspond with any of the details in the ation email!

Is there human customer service in evri??