Limeroad — stealing my lr credits even before its expiry date

I ordered a product in limeroad, for which i got 50% lr credit (I knew it before ordering) after 7 days of product delivery. Here itself the fraudulent started. If we return the product in case of any damage which is lr's mistake, we should wait for more days. Even after 7 days i waited, the validity of the credits given was only 10 days. I checked after only 1 day of receiving the credit, i found it zero, when i put another order. There is no trace of the credit whereabouts. What kind of stealing it is? It is totally unprofessional and cheap activity.
Another thing is, now i was ordering a product for which they have notified me buy 1 get 1 offer, and when i look for the free product it is totally irrelevant to me as all products are for opposite sex. Can i go legally against my credits stolen by limeroad, with screenshot, email details?