blacklisted

I received an account over a year ago for R3000 data used. Upon calling them they promised to have a look at it and reply, which they never did. I only paid the usual R350. The following month the amount was over R4000. I then destroyed the simcard, and requested from Autopage again proof that it was indeed me using the data. They failed to do so. they gave me a vodoacom form to complete, and asked me to go directly to Vodacom to supply detailed bill to show which number used the data. Vodacom sent me back to Autopage my service provider. They failed to help. instead threatened to hand me over to lawyers. I destroyed the simcard, and received an bill of September for the amount of R9000 for a simcard that didn't even exist anymore. They fail to answer my emails and instore they just refer me to credit control. Im now blacklisted. please help