I purchased my R1 black driver and Versa putter from doing surveys and watching videos. This is proof the surveys and videos do in fact work. I also play this game with the level 81 Nike golf balls.
Not trying to rub it in at all, just letting everyone know that surveys and videos do work to earn credits.
You have to actually read the survey questions, and not expect to get all the credits you need at one time. It takes time, persistence, and patience.
Don't give up.