I was told by the staff at the front counter to use the app because I could use a buy $20 get $20 chips coupon. I proceeded to purchase the $20 order of chips and received a notification that said the app charged me $20 but could not deliver the chips into the account due to an error. I talked to the manager and he told me that there was nothing he could do about the error. I mentioned that I was told to use the app to get the coupon and he did not care to help in the slightest. I went outside to call the D&B support to get a refund but there was no number to call so I went back inside to demand a refund or a chip transfer into my account. The manager said he could not use the coupon because they do not have it in the system so he could not give me the chips I paid for. I went back outside, found the coupon online, and went back inside to show the manager that I have a coupon with a barcode. He then proceeded to help an employee load the chips into my card, and gave me the chips I originally purchased without receiving. HOWEVER, HE DID NOT SCAN MY COUPON. This means that when he told me that he could not honor the coupon on the app because it did not exist in the system, he lied to my face. This is shameful. It took me about half an hour to get the chips I paid for and not only did the manager not want to help, but he even lied to my face about not being able to give me the chips that I paid for. I have never written a negative review on Yelp before, but this is the worst behavior I have ever seen from a manager at any business. I will be surprised if I ever support this D&B location again.