I am VERY dissatisfied with the response of Lidl's...

I am VERY dissatisfied with the response of Lidl's telephone employee on Monday 4/17/18.
I reported that there were NO more offers on 'Super Saturday' and that 7 other articles were also not available !! Response from that man: you should have called Saturday !! Now (Monday morning 9.30 am) I can't do anything anymore.