I store order confirmed paid item sold to another customer instead Oops

Absolutely the worst customer care I have ever come across Ordered Apple Watch online last week Thursday, delivery says 3-5 days , I call to enquire today about my order tracking , so agent 1 Thabiso says to me he will call back till now now call from him received.I callback about 2 hours later agent 2 says the prefer is in processing and he see Thabiso noted same on system but failed to call to update me .Happiness, some time later agent 3 calls to tell me they accidentally took my money , confirmed my order on email let me wait for three days to now tell me that my order was accidentally sold to another customer and that I must take my refund and proverbially shuv off . I mean how does all this happen without a word to me until I decide to pickup the phone and enquire . To I store I say go take a hike I will not accept such ******* service. I don’t care where how and what gets done to resolve my query but it will get resolved.my order number is PLG49138. It’s a multi million dollar entity door goodness sake can some not take an executive decision, please guys come on let’s come to the party here