Where can I contact technical support, I need help please, I don't receive my RT or the weapon from the coupon

Where can I contact technical support, I need help please

HELLO GOOD AFTERNOON I HAVE A PROBLEM WITH THE COUPON AND I DIDN'T GET THE GIFT FROM THE MINIGUN OR ALSO CALLED GALTIN, I TOOK CAPTURES AND IN THE IMAGES, NOTHING AS A GIFT, IT SAYS IT'S ALREADY CHANGEED AND NOTHING AT ALL IN MY INVENTORY IS EMPTY AND I DON'T KNOW HOW CAN YOU SOLVE FOR ME THE COUPON CELL AND THE RT THAT HAS NOT ARRIVED TO ME. IT IS NO USE TO CHANGE IT BECAUSE IT DOESN'T GIVE ME ANYTHING AT ALL, CAN YOU CHECK MY ACCOUNT PLEASE, HELP ME

AS YOU SEE IN THE IMAGES, NOTHING AS A GIFT, IT SAYS IT'S ALREADY EXCHANGEED AND NOTHING AT ALL, MY INVENTORY IS EMPTY AND I DON'T KNOW HOW I CAN SOLVE THE COUPON CELL AND THE RT THAT HAS NOT ARRIVED.

Hello, my name is James and the code for the weapon called galting or called mini gun does not work, the coupon code did not give me anything when I exchanged it, an error appears, and I would like them to solve that, it is not fair and I also reloaded rt and neither I don't get the RT that I recharged