Vodacom blocks my line unilaterally

I have since raised my concerns with vodacom with ref: S3-8WA9N-NGVO Basically Vodacom says in Dec I used data worh R2, 500 no statement whatsoever was provided to proof this, making their debit to be around R3400 which bounced which is above what is normally deducted below a R1000 or so, I then called Vodacom and they requested I make a payment I requested that I make a monthly payment of between R800 to R1000 and in March I will pay whatever is due to them, however vodacom has since decided to block my number not to even recieve incoming calls I without any information or whatsoever they behave as if they couldnt find me anywhere for months when I only owe them their stupiid extra data charges, I wonder when they close my number how do they expect my life to continue and make money that I am supposed to use to pay them, If I wanted to use a different line I would do dat anytime but that line is my primary line and interviewers have that contact number. To me this is so inhumane and ******** and the people I have stated above have done nothing to assist me infact I challanged vodacom to retrieve our conversatioon I had with Simon who gave me attitude and his leader Sarie refused.