Horrible Customer Support!

I purchased Windhoek Beer and in the pack there was an empty can that was still sealed. I would just like to say that their customer support is terrible. There is no way of contacting them to replace the can. You can never get hold of them on the Customer care like on any day of the week or at any time of the day, I am put on hold for more than an hour with no answer!!!!! Further more when I visited the website to leave message, that system does not allow you to leave a message, an error keeps coming up and your messages never go through!!!! What kind of ****ty service is this from such a huge beer company! I am extremely frustrated I can't go back to the store and ask that they replace it because I don't keep the cash sale slips!