VODACOM's service is disappointing

My Husband cancelled one of this contracts TWICE...spoke to two different people at Vodacom, the contract was NOT cancelled, which resulted in his account being debited twice for what he assumed was cancelled. We have posted a complaint on Facebook and STILL NO ASSISTANCE. Their customer service number rings for a long long time, then you get directed to an automated service and eventually you get to speak to a live person, who doesn't do what they ought to be doing, offering a SERVICE to customers.! Very annoying that NO other way of BEGGING for assistance is working, Vodacom WILL refund what they should not have debited even if it takes another 2 months to complain on every platform possible.