Lack of service from Curro Parkdene

I went to Curro Parkdene (Boksburg) a month ago, because I had not made an appointment I was given an email address and phone number to make an appointment and I was not allowed, was turned back by security. I have been phoning that number (same number as the one on their website) and the reception is always busy and sending emails and no one ever answers. It's really a disappointing lack of service.