Online service/ app sucks

Somehow I subscribed to your newsletters and now I'm getting weekly emails from them so I decided to download your app to try it out. It is literally like pulling nails . For every item, I click on to add to the basket I get a message to call the call center which I did and no one could help me mind you I am not even to buy on account it's a debit card purchase. I deleted the app and will unsubscribe from there