JUST FOR KICKS & DHL ********

I have ordered a pair of sneakers on the 19 May 2020 from Just for Kicks online, before I placed my order I asked a few questions on the online chat service, one of the questions was in which country are you based they informed me South Africa, I also asked how long does the delivery take they advised 7 days I knew it will be longer to the current COVID19. There was no way of tracking my parcel so I send an email to their sales department to find out where the parcel is and was advised it arrived in South Africa and DHL has it?? I was so confused and I though they are in SA but never the less I called DHL and was dealing with Tebogo - she advised we need to send proof of payment of the order, which was send. A few days later no respond on whats happening and once again I must follow up- I was told the parcel cannot be released until I paid $24 - I asked why and she confirmed Just for Kicks has declared and incorrect amount on there invoice - Who fault is this?? Everyday I follow up and not getting anything from Just for Kicks or DHL What is happening here can someone please treat this as URGENT and advised me what is happening!!!