Bad Communication Service

I call Vodacom today to query why they haven't debited? what I was told by Siphokazi is that I am changed to a cash payer. I asked her who did because I have never authorized that and on top of it no one called me to advise on such information or received an SMS, she didn't know why I wasn't informed of the changes. I asked her why was I changed to cash payer? she says normally it's because if they went to a client account before and there was no money, they automatically change it themselves to cash payer. But I told her on my side you have always received a payment. She says she can see in May they didn't receive a payment. I told her no point of correction you did receive your payment than someone that was supposed to pay the Vodacom money in my bank he paid it to the store hence I have 2 contracts so they have always received their money, all I did I reversed the one payment since they have received 2 payments. What makes me angry is that if I wasn't the person that always check if the debit order went off I wouldn't have known. if I didn't call Vodacom I wouldn't have known that they already set my account to be in arrears, without even calling me Now I must go pay the account instore which is I do not have time for that's why I chose debit order option. Wow, you guys really suck.