Bad service

My parcel has been with DHL since the 3rd of December 2019 pending customs clearance. I have sent each and every document they have requested. They request documents and you give them on time then after a week of begging the consultant for any feedback then they request another set of documents. I have been through this process before and it took 7 days for customs to clear the parcel and this time it’s been more than a month. What I have realized is that the consultant I’m dealing with is clueless of what she is doing. Customs will request a letter from my supplier and when I ask her what must the letter entail? she will take 3 days to reply and by phone not even email and she will just say Customs have not rep**** to her so she has no clue of my questions. I will therefore write the letter assuming what they might need. The last letter they sent they said they have sent my parcel to some state facility to be discarded/sold so that they can recover their money because I didn’t respond with the necessary documents on time. I was shocked because I have sent all the documents. I contacted my lawyers because I just didn’t know what to do anymore and the following morning they say there are some penalties I need to pay so now they need a letter from PayPal so that they can issue the penalties. I still asked what must the letter entail? I attached an invoice from PayPal on the email because I know it’s going to take her another week to reply and I’m still waiting on her response. I’ve learnt to read reviews before I use any company now hence it’s also very important for me to write one. What a disappointing service!