Vodacom block me from calling customet care to fix their fraugelant acions on my acount.

a Vodacom agent called me and migrated 2 of my contracts, in stead of the promised less installment of R150 it went up R400, I called Vodacom to sort this out, every agent promised me results and a call back, now when I call they say an unexpected high call rate was detected from my number and its blocked, so I must I fix it if vodacom block their own customers to prevent them from calling.