*****ulent acitivities at VODACOM

I'm struggling with Vodacom after some sort of *****ulent activity in their contract marketing business. First the telemarketer was very rude and send me an incorrect gadget. Vodacom requested the gadget back and promised to reverse the contact . On retuning the gadget they still charge me monthly for that contract upgrade and if I try to log a complaint the departments are disjointed and they keep giving reference numbers and referring me to different departments. I don't know what to do now as they have blocked my line and still charge me for almost a year now. I have had business with them for more than 15 years and I don't know why they are operating like and inexperienced company. Please help they are charging me every month through debit orders and I tried to block, now they using different references and they charge penalties to my account. Please guys be careful when dealing with Vodacom agents. There is *****ulent activities going on. they have since told me they are investigating *****ulent activities within their business but they never came back to me .Please help