Parcel at EMS more than 3 months, no feedback

My parcel RX***CH / RI***ZA has been stuck at EMS for more than 3 months. I've received one email response in December stating that I need to send an invoice. Since then I've sent the invoice 3 times to [Email Removed] with no response whatsoever. Furthermore, I'm never able to get through on any of the contact numbers (e.g. ***) - the call is cut off after 5 minutes of waiting every time.<br> <br> I've emailed [Email Removed] as well, and at least got a response stating that they forwarded the invoice to customs, but I received no further feedback after that.