Same contact 3yrs no new device!!!!

My debit order went off double wanted to know why.The lady from Vodacom sed it was bcs I skipped a payment but on my side it showed it went off to correct that I gave them my statement. after agreement with accounts I paid my due and had 3 months left on my contract.But after 3 months when I went to the vodashop they sed my account was not reactivated they gave me a new contrack .After I asked for the settlement amount bcs I don't want n new contrack Id rather pay off the small amount bcs that was what I told them the 1st time when I reactivated my numbers then they reactivated my new numbers so I can upgrade after 3 months on my contrack,they sed it was fine I must just come back in 3 months time went back in December 2014 to upgrade and still no reply or any one who could help phoned about more than 20 times in and out of the vodashop for 6 months.Morale off the story I am still on my old contract no new device and still paying for 4yrs :device & contrack.I do have prove of all my payment and the different amount they gave me, about 5 diffrent amounts not just to me but the lady from vodashop who helped just to get it activated .There is more than just what I said