Extra charges for negligent and unprofessional behavior

Hi i would like to ask for advice as well as expose SKYNET/ ANY CUSTOMS departments.... I paid my customs to Skynet as my parcel received from overseas was abit overweight and it said in the email that I would only receive it after paying.... and so after paying that amount was paid and they tell me that the amount was received (bare in mind that these people all only will send emails about MONEY they need paid to them! and NOT help you or answer your questions) , they then go ahead to tell me that I have to pay storage fee and I rep**** to the email and as why? And what storage fee? And that I have already paid the amount for customs and they even said it's received (and I sent my POP in email form as well as screenshot form to them) and ONLY NOW they go ahead and tell me that it was received on the 2nd of June... And it has been in the state warehouse and has overstayed there.... How is this my fault? These customs people try to do things on purpose for us to pay? And by telling me sooo late that it was received a month and a half ago is such unprofessional, negligent behavior and they are CLEARLY doing it all on purpose!!!

Please see the pics attached to this post and please advise if I'm right and if I should pay that extra amount or what I should do... Thank you