LAYS COMPETITION

Lays Chips are owned by Pepsico and are currently running a competition which very clearly states begins 01/01/2021 and ends 01/06/2021. You have a unique code in each pack and red to dial *120*440*unique number which you do only for a response saying competition opens and closes on 01/06/2021? I have tried e-mail and their instant messaging platform but no response! What is going on here? Lays are very popular in S.A. so how can such ***** up happen especially in my case I love them and wanted to enter the competition. Extremely disapointed in your MARKETING and customer service team for such an unacceptable error.