Cut off continously or calls ignored on call centre and Centurion branch numbers when I try to enquire about incorrect pricing on website

I ordered Large Dentastix through e-Butler who delivered the Medium size instead. To see what the difference in price was I went to the Makro website and found that they were both priced the same. I tried to find out what the correct prices were by phoning firstly the call centre number on the website, which somehow landed me at the Vereeniging branch. They said they will transfer me to the Centurion branch. I was cut off. I then tried the Centurion 0860 number and was informed by a recording that "the number is not obtainable". I then tried the 012 number. A woman answered and because she mumbled her name and I was stupid enough not to ask her to repeat it, I unfortunately do not know who she was. I started explaining to her what I needed (I was polite in case you are wondering), but she just cut me off half way through my explanation. I tried to phone the number again. The first time it rang, and the call was pick up and immediately terminated. After that I tried to phone several times again, but she probably got sick of the ringing phone and took it off the hook, because it then just remained engaged. So, what do you suggest I do next? Put in leave at my job and drive to Makro like we would have done decades ago when technology was not an option? I believe that you have a serious problem with your call centre and switchboard/telephone/reception staff.