Tickets sold out at stores but i was able to buy them at ticketmaster?

Im going out of town for a slipknot concert. I asked my cousin to buy me a ticket and i would reimburse him. he went to different locations to buy the ticket and they told him they were sold out. I went online and looked at ticketmaster. They allowed me to buy a ticket. Will i still get my ticket or did i s c r e w e d out of money?

Ticket master is one of the best to get tickets.

They don't need the bad rep, because of it's their business.

If you are worried, contact the venue about the tickets.