Bad service

My name is Sizeka Frederick Mabasa and I have account contract with Vodacom for a laptop. Almost every month they are failing to deduct money from my account after I gave them my banking and my account is on areas. I went to the shop to pay all the amount that was being and a normal monthly installment but my name is still on arrears. Currently am struggling to buy a house becuase of this company. I will never ever took account with vodacom and or even to reccomend someone to take account with them.