How to get an incorrect bill corrected?

[#1]

I have been trying to get a bill corrected, but even after the adviser promises that the refund has been processed and will be in my bank accounting 5 to 7 days, the then decide to put it as a credit on next months account. I am then again charged for calls even though I pay for unlimited calls, so I am expected to pay the overcharge again because the system cannot calculate the correct amount. How can you raise a complaint that will actually get something done.

[#2]

Hi @jeff1, thanks for your post.

We're sincerely sorry to hear of this ongoing issue.

We can see from the notes on file that you spoke with one of our managers yesterday evening, who has taken ownership of the issue for you.

Please let us know if there is anything further we can assist you with.

[#3]

I do not think that your manager requiring me to pay a bill that I do not owe before you can sort it out, as taking ownership of the issue. 

[#4]

Hi @jeff1

I have replied back to you regarding the matter on the following ticket: https://www.plus.net/wizard/?p=view_question&id= 188641011

Thank you for your patience.