Unprofessional billing department

I am so disappointed that after years of cancelling my Vodacom contract, nothing has changed. Their billing department is the most useless and unprofessional I've come across in my entire years of using service providers. I cancelled my contract with them years ago for the same reason. I recently gave them the benefit of doubt assuming things have gotten better and guess what? Not even. They will debit your money on a wrong date, before or after. I made contact with them on WhatsApp platform to make a payment arrangement, guess what they debited 3 days after the agreed date, what kind of a huge organisation that cannot follow a simple instruction? I'm appalled and disgusted at their service once again and I'm not renewing this particular contract when it ends. It's a pity I can't take the things back because I bought them in October. Never again will I take a contract from them I've learner my lesson and I will sure pass the word to anyone around me