Acc I*** Shocking service, incorrect debit amount deducted, constantly having to phone them to have the matter resolved

At the end of November 2017 my monthly dr order was returned due to "insufficient funds", however my account showed there was sufficient funds to cover the amount due. I contacted Vodacom on 13 Dec and spoke to Solly who advised me, after speaking to his supervisor, to email my statement to ********** and to request the matter be looked into and i not be penalised the R100 charge. Guess what... it wasnt. My phone was suspended and i called to have it reinstated. Was advised to pay the outstanding amount and reforward the email to ********** I paid the November amount that was returned and attached the pop to my email to legal collections. I was told the phone would be back on in 2hrs. TWO DAYS LATER, i called as was still not on and VOILA, the guy on the other end magically reconnected it. Today, 29th Dec the November (which i paid) & December amounts as well as the R100 penalty charge was deducted from my account. I spoke to Priscilla in Subscriber collections today at approx 8:25a.m. who said there is nothing they can do, in fact the amount deducted from my account is not even reflecting on their side (ref. ********** 197). I have to go into my bank and request a reversal which costs me R35, then pay the December fee to avoid being cut off again. I am a new customer to Vodacom and beyond disgusted with their service, am having to constantly phone & try sort out their stuff up. Vodacom are probably the most expensive but in this case you do not get what you pay for and when the contract is up for renewal i won't be renewing.