I won a giveaway, I did received an email days ago but I still didn't received any reward. I emailed both the support and marketing team of NitrogenSports but still no reply from both. I also emailed (a couple of times already) the one who sent me the email but there are no replies from anyone, even in social medias of both Nitrogen and the one who hosted the giveaway.

This is the email I got days ago - 

It was BETCSGO's giveaway that I joined, it was sponsored by NitrogenSports