Problem with submitted shares not matching what i paid for.

I verified the orders i submitted yesterday and today for the amount of shares actually submitted to the pool and they are at least 20% off. Which means i am paying 20% more for the hashrate i hired.

Has anyone else had similar problems?

Here follows my calculations:

Order	Price BTC/TH/Day	Total BTC	Unspent BTC	Limited TH/s	Expected Shares	Actual Shares (on pool)
Nicehash
#252158	0.0103	0.205702	0	100	401749338.9
#250693	0.0104	0.156702	0	250	303106382.5
Total nicehash					704855721.4	560946737
WestHash
#250694	0.0104	0.303702	0	250	587446328.5
#252159	0.0103	0.156702	0.05561814	100	197423330.5
Total Westhash					784869659	668995673

Has anyone any idea what happened? Can i get my missing shares refunded?
Thanks,
girino.