Vodacom is a nightmare

I have never seen a network this idiotic in my life.Vodacom has been deducting money from an account i closed and u stopped thier debit orders.I went to thier shop as i thought it was my last month on contract and i made payment, i even asked the cashier 3 times how much do i owe.I asked her to check as i have been getting smses that i owe a certian amonut.She did and she said R130 and i made the payment but then i recieve my statement and it states that i owe R250.I called vodacom and i couldnt reach them for several days and left callback options.Thier wait is 20minutes, since i have to pay extra for my call to be activated my phone, i opted to go to work abut eay to make a call to them.The lady escalated the matter and gave me a reference number.Mind you i will not pay a cent until this is sorted out.She then advised me to make a call to cancellations in a given date and cancel the contract.I came in early once more and did exactly as she advised me but thier lines were busy and i waited a good 30minutes on the call until i made another callback option.I even entered my alternative number.Did vodacom even try and reach out.They are so focused on the fees that accumulating as they love milking people who have finished thier contract.Today i received a notification that i owe R355, how the hell did i get from R130 to R355.I will not pay this money and yol can blacklist me if you want.The incompetence ive had to deal with over 2 years is appalling.How do you not know how much my account us due when you work at a shop that there for assistance with accounts.The Rosebank branch is the worst.Their always packed and its like they want you to pay and leave the the store without you asking for more help,the only time you will get attention from them is when you go on sites like this.