SWEATFLIX BodyRock Half Ball Balance Trainer: Stability and Fitness Half Moon Balancing Ball with Pump to Improve Core and Ab Strength - Exercise Equipment for Home Gym Workout, Yoga and Full Body

This product came with no instructions and I have been unable to determine how to blow up the half-ball. The pump it was sent with does not appear to work effectively and there also does not appear to be a place to insert the pump.***Update: I was able to locate a customer service email for the company online. Customer service was very responsive and willing to send a new unit if we couldn't solve the problem. However, upon finding an electric pump with attachments that fit the trainer, I was able to get it inflated. The problem appears to have been a defective pump. It appears I will be able to use the product satisfactorily, but it cost me a lot of time.

The air won't stay in it. I pumped it up, then put the little piece in the back to stop the air from coming out. By morning it was deflated. I pushed down on it and I could here the air coming out, despite the piece that was supposed to stop the air from coming out, being securely placed in it. Not worth the money I spent when I cant even use the thing!!! I want my money back!!! How can I return this useless thing????!!!!