not debiting but too quick to hand over customers

After i had a problem with vodacom taking more money from my account last year ,I am not happy with Vodacom yet again they did not debit my a/c for the last 3 installment of my contract and i called them and sent emails but nothing was done, and now they have handed me over to their lawyers they ruined my credit record .Vodacom didn't do their job but they are too quick to hand over my account now this will be affecting me in future .I regret ever taking a cellphone contract with vodacom and will never use vodacom or even recommend it to anyone.