Woolworths Online - Never Again

I just had a bad experience with Woolworths online shopping (South Africa) today and im very disappointed. I bought stuff online and paid with my debit card. Woolworths debited my account twice for one transaction. I phoned them, and spent the whole afternoon being transferred from one person to the next. They still could not help me, instead they told me that they had only debited my account once. i even sent them proof (bank statement) showing that 2 transactions had gone off, but i was still tossed around. Eventually my personal banker intervened and i just received my money back. Being a regular customer for Woolworths, their response was extremely unprofessional and i am disappointed.