How should I proceed with Google support regarding a refund?

Ordered a pixel 10 pro + ear buds + pixel case. I got my order without a case. Tried to reach out to support but only got generic answers like please wait a couple of weeks while we work it out.

I returned my whole order but only got refunded for the phone. Reached out to support again but I'm stuck in this Kafka-esque nightmare where they only tell me to wait a couple of weeks.

How should I proceed? I've had google phones since nexus 5. But this is the first time I order from Google store. I live in Sweden.