Fast Service? Really?

My mother in law posted me a package from London, which included envelopes and invitations for our wedding. The package should have arrived on the 19th of November. I received a text message from DHL requesting me to contact them which I duly did and this was when the stories and disaster began. I was informed that I would have to pay a customs duty of R419.83 which I paid immidiately. I then gave them a day to process my payment and then contact me... They never did. I have now phoned all the departments at DHL around 7 times querying the whereabouts of my parcel but to no avail. I am told that the customs pay point is off line so that they cannot process my parcel, I'm then requested to email my proof of payment and was given a variety of email addresses to do so. Today I contact them again and I was told that they would respond immidiately and let me know when I could have delivery of my parcel. 4 hours have passed and frustration has got the better of me. Does my parcel even exist anymore???