Vodacom just wake up please

I had fibre installed in Oct this year.It is on promotion and suppose to be free for the first 3 months.So this month Vodacom decided to charge me for Oct and Nov and took the money through debit order from my account.I would like them to please refund me the two instalments they took this month since they are only suppose to start charging me in Dec. Also I would like them to please change the account holders initials as i have asked on numerous ocations,because my husbands brother is also at Vodacom.Now we receive a statement with G as well as H Habig written on the front.How clever is that.