Incorrect Billing

<p>I upgraded my telkom mobile contract in 15/12/2016. I was billed the for December and January as per usual. This month I am double billed plus hit with a penalty fee - neither of which I was informed about. When I queried this bill with the call centre, I was advised that the first month of a contract is "free" while the following month you are billed twice. I never had this so called free month and why was I charged a penalty for migrating? I upgraded to a larger package, I did not downgrade my package. Plus, no where on the paperwork I signed was this mentioned to me. I should be refunded for my "free" month and the migration fee!</p>