[pasqui]

Do you think it is more effective to deal via chat or phone call?

In terms of live chat, you may be lucky to communicate with a chat bot and get an Instant refund, however the cost of your Item Is high, hence you'll most likely be passed to a real representative.

As for a phone call, It's an Instant form of communication so you'd need to act there and then, as opposed to delaying your response (to allow time to think) with live chat.

so it is better to prefer the chat right?