Dropped offer and doesnt respond to messages

My app had shown that an offer had 4 hours to go so I make a trip to the store to buy the items but later I get an email that says I submitted AFTER the offer and didnt get anything. I replied that the app showed I had 4 hours left and even made the purchases and submitted within the timeframe and now no responses through email or from the app. Very disappointed.

RiversideStudent about Shopmium Earn Grocery Cashback