Thumbs down if you hate watching ads

I tried to play games while listening to music, but the ads (mostly Mistplay, Freecash. Although skip ads pop up in the middle, you have to press skip & close about three times, and it's annoying because you have to go to Google Play every time) keep interrupting the music, so I can't play. I've accumulated about 380 gems in less than 30 minutes by watching ads, but when will I get the reward?