INCORRECT INVOICING

I Had two contract lines with this company in Oct 2013,around Oct/Nov a consultant contacted me offering a renewal offering a much cheaper deal .One deal was R100 for R200 airtime and the other was a R80 deal for a R100 airtime. They kept billing me for between R225 to R229 monthly .I sent them email enquiring about that and they gave me many different. I then wrote to them telling them that I will start paying R210 until the tell me what the extra money was for .When I started paying that they suspended my lines from the 16 Feb. 2013 until the 21 Feb. 2013 twice a day, they started demanding me too pay reconnection fee of R45 per line and I said no I will not pay it. .I paid R210 until Nov 2013 even though my lines were suspended. During that time I have already handed them over to my lawyers but they denied having any records of communication, they could also not explain to my lawyers what the extra money was for. I then handed them over to consumer credit office ,only then they admitted that they have overcharged me but still refused to reopen my lines and give back all my airtime .No they are demanding me to pay them R2000.<br> though the contract was cancelled by the lawyer.