PostNL Parcel Stuck in Customs Since 7 August

I am filing a complaint about the customs handling of my international shipment with PostNL, with tracking number LX038185763NL. According to the tracking information, the parcel has not moved since 7 August and there has been no request from PostNL to start customs clearance. I find it very frustrating that the shipment appears to be stuck without any clear communication or next steps. It has been difficult to get in touch with PostNL directly, and the only channel I could use was the chat, where I did not receive a clear or concrete answer about what is happening with my parcel or what I should do. I request that PostNL immediately starts or unblocks the customs clearance process for this shipment and provides a clear explanation of the current status and reason for the delay. I also expect to be informed of any actions I need to take so that my parcel can be delivered as soon as possible.