dailysteals.com Unauthorized charge to credit card Internet

I ordered three items from Dailysteals.com.  They shipped four items and charged me for four items.  I notified customer service by email of the issue and they did nothing to correct their mistake.  I would be more than happy to return the fourth item shipped to me, if they pay the return postage.  Their billing records show I ordered only three items, but they still will not admit their mistake and correct their error.  I tried calling customer service and other departments to try and talk to a live person, but I had no luck reaching any live person.  It appears the only way you can communicate with this company is by email.  I wish you luck in dealing with this company if you have a problem.  I do not plan to buy anything more from dailysteals.com as they are only as good as their service, and that is poor at best! In my situation, their service was non-existent to correct the problem.  Do they have poor customer service so that the customer becomes frustrated and gives up?  What kind of business plan is that?