Vodacom busy debiting even months after I settled my accounts

I am very unhappy.

On the 2nd week of January I settled the 2 contracts that I had with vodacom. I called them for settlement amounts and emailed all documents back as requested.

End Feb I was debited with about R600, end March R70. I called as I don’t understand why I am being debited even now and the weird thing is I never had a contract of R70. Now for April I received another invoice of R70 even after o had contacted their customer center.

Can I please be refunded all my money and can they just stop debiting my account.

It’s funny how they are slow to fix their errors but they are quick to debit us.