Extremely Bad customer service

I wanted to make use of my club card via my app and was to update my app and after that I can't access my clubcard via my app I've made several purchases but I cannot make us of the clubcard I mailed their customer services but on vain they did not resolve the problem I then mailed their Ceo only with a response that she is on leave Question is why offering a club card with all the benefits but it cannot be use, according to me it's false advertising On top of everything my complain is not attended to even by the Ceo of the company Is clicks service realling dropping so badly