Bad service from SA post office

I ordered something from China on 12 September 2022 (they ship within 24 hours) it arrived in SA on 27 September 2022. The JIMC hasn't checked it in yet so I'm still waiting for it, why does it take so long? 😡 I ordered from the same company before and it took 31 days from the order date till the day I received it at the post office, now nothing is happening. I track the parcel every day and it still shows "on route" I also call the post office to track it for me on a regular basis. I don't know what to do I feel so disappointed, nobody can really tell me what's going on. I'm too scared to order anything again a specially if it has to be send by the SA post office.