Migration Fee

About 2 months ago I migrated to a higher package.Telkom's website clearly states that migrations to a higher package is free.Then when I got my bill,I saw that I was indeed charged a migration fee.I was of course upset and phoned customer service.The lady I spoke to said that she can see that I should not have been charged a fee and logged a query.Two weeks went by and I received no feedback.Meanwhile, I had to pay a migration fee on my monthly bill.I phoned customer service again,and once again they said that someone will contact me, but that has not happned yet.I recieved a new monthly bill and there is no mention of when I am going to be refunded.Its been almost a month now.I would just like to get my money back.