Extremely Disappointed with service received from Clicks Online Store

I am deeply disappointed with the service I received from Clicks' online store. My recent order included an item which Clicks decided to replace with a "similar" product without informing me. This is completely unacceptable. If the original item is unavailable, I should be contacted or refunded — not sent an unrequested alternative. To make matters worse, I had taken advantage of a Buy 3, Get 1 Free promotion, only to discover after payment that the third item had been removed from my order due to "out of stock" — even though it was 'in stock' when I added it to my cart, and still shows as ‘in stock’ on their website. This feels misleading and dishonest. I contacted customer care for assistance (twice via telephone and twice via e-mail), but unfortunately, the service I received was unhelpful and, in my opinion, lacking basic professionalism. My concerns were brushed off, and I left the interaction feeling frustrated and unheard. In my opinion, based on my experience, Clicks needs to urgently review its order handling process, promotional integrity, and customer support training. I expected better from such a well-known brand, but this experience has left a very poor impression on me.