You spend quite a lot on that

Shame it does not work.
Could you give me an overview of your payouts of the last 5 days and your total hashrate?
would like to compare this to my payout.
Compare the payouts relative to hashrate and see if they are actually paying out what is earned or just tricking the whole thing.
edit: Let me be the first:
Total hashrate: 6.2TH/s
Payouts:
0.002124
0.002135
0.002106
This would results roughly in a payout of 0,034258
BTC per 100 TH/s.
Which would mean you need to get around 47,5% of that.
That is 0,016272
Is that close to what your current daily payout is?