Vodacom cell phones contract

Good day

Cell phone number *** imei number ***

I'm having a problem with vodacom they were deducting R2000 of which our initial agreement was R580,00 now I went to the store and complain about it but my matter was not resolved. I wrote to hello hellopeter and that is when my matter was resolved now vodacom promised to refund me the money that they took but they have not done as they have promised. Now I believe that the money that they have taken from me is more than enough for me to finish this contract if not can the please calculate what the own me and what is left from me because I can see that they are not willing to refund me Thx in advance