Unable to change or confirm the address to change it.

where do I even begin. I have a package that needed to be delivered to me on Thursday to an address I have had delivery done to successfully however on their tracker they claim is a bad address, I was given a link to update it and the options you have is to log in or register, I cant register since I don't have an account to enter under the field "***" I tried calling the *** but its not available. I used their Live chat just so I can be able to get the parcel delivered at my work place, that live chant was opened for 2 ours, at the moment I am using their whatsapp platform to get hold of someone to up date the delivery address but I am not winning, I am going to cancel the contract with the provider what used Skynet for delivery because I cant be trying to sort this issue but they are just handling things badly.