Blocking Lines because I wont pay credit due to me

Vodacom, what other channels can one use.<br> You ignore me when I phone your call centre, you ignore my emails, you ignore facebook messages.<br> I've even went in to one of your centres and lodged a complaint there, still you ****** me around.<br> You have now blocked my lines, because I will not pay the R300 odd that you incorrectly added on to my account.<br> During the various conversations I have had with your staff, they have all assured me that it was an error on your side and that a credit will be processed and will reflect on my account.<br> I have been hearing that story for the past 4 months now. Still nothing has happened, and now you block my lines because I wont pay for an error you made.<br> Id suggest you get someone to phone me as soon as possible, since I have kept all my queries that have been lodged, which shows that you really don't care about a customer that has been with you for more than 5 years.<br> If you could get someone in your accounts department to process the credit and unlock my lines before day end, yeah thatd be great.<br> Wouldn't want me running to the ombudsman now would you?