They should reset the whole system, allow every legitimate user to input the same code again, this time via SMS so that scamming/using multiple numbers would be impeded and THEN tally up the codes. This basically eliminates "cheating" as to do so you'd have to use multiple SIM cards to enter the lottery numerous times.people abused the system by creating bots to generate codes and enter codes under different emails
now toco bell has no idea how to tell who cheated from legitimate users