Frankly, I see no need for you to apologise and I am somewhat amused by someone taking you to task for airing dirty laundry and then doing the self same thing in the very next sentence.
You may regret what you said but it is none the less accurate for that. Alex behaved like a d1ck and admitted as much. The difference here is that he is (or should be) promoting a brand and customer service is an important factor. He got exactly the reaction he deserved.
Anyway. Welcome back to the Boogie club, when you're back in!