Very bad feedback and no response

I have sent 3 emails and made an unknown amount of phonecalls to the Head Office of the national post office which only brought me no success. I was at the local post office to collect an international package that i bought over WISH only to find out that i have to pay a handling fee before i could recieve my parcel which was to my surprise because i never had to pay a handling fee before. This was about 2/3weeks ago that this happened. I started emailing the customer services department only to recieve not a single reply. The staff was rude and could not even explaibln to me properly what this handling fee was about only telling me that it is stated so on WISH that we have to pay a handling fee. I have emailed WISH aswell and within 12hours recieved a response on my email telling me that they do not charge or collect any handling fees. I have taken photos of the post office inside and outside showing no evedince explaining this handling fee. I have all my emails and phonecalls i have made and sent. I even have a recording of one of the staff members at the local post office telling me that WISH charges us for the handling fee. I will post all my evvedince on hellopeter if this does not get resolved.

Thank you