LeanSpa, LLC LeanSpa, LLC Agreed to refund my $ but has not. $79.99 Internet

I ordered a trial order of LeanSpa.  The company sent me and deducted from my bank account the amount of $79.99.  I called immediately. They told me that it wasn't a problem just send back the bottle of diet pills via certified mail & once they rec'd it they would refund my $.  I did exactly as they requested, called them with my tracking #, they confirmed that they had rec'd it & told me I would get my fefund within 7-10 business days.  Over a month later I still have not rec'd my refund. I've tried to contact them via Email and telephone to no avail.  So frustrated!  What can I do? I want my money back!!