Viagogo review: Purchased tickets

I purchased tickets for Andre Rieu concert that was supposed to take place on September the 24th
ON May the 2nd the seats and the purchase was confirmed and my credit card was charged
It was mentioned that the tickets will be delivered on September the 23 one day before the concert
On that day I was waiting to receive the tickets and after a couple of hours I was able to contact the customer service that told my the at the seller did not confirm the tickets
I got total different message at the time of purchase
Based on missing options we were obliged to cancel one day before the concert the purchase
At the time of cancelation a window was opened and it was mentioned that an additional voucher of $ 75 will be received because of inconvenience created. I did not get a refund for the full amount paid and no voucher
Definitely this company is a scam
I was wondering why Canadian authorities let this company to still money from people who want to have an unforgettable evening