From about 800 $ which I earned here from surveys, only few I did not got paid.
Still making a solid money from surveys and have no issue with surveys.
If I got paid for 30 surveys and not being paid for 3 surveys, I am not coming to Forum to write, like:
Dear Sir/Madam, I finished survey and not rewarded.
Please, help me ..
Anyway, I am just saying from my experience and I wish you and all here best of luck