Last month they made a ***** up with my line rental and still they have not sorted it out

<p>So last month I lodged a complaint against vodacom for charging me an extra line rental, In the beginning of this month they phoned me and told me no they will credit my account with the overcharged amount. This is now 3 weeks later and yet there is still nothing being done.Sort out my account vodacom! Your service is great when you want the sale but once you have it you guys are pathetic when it comes to sorting out admin stuff which you overcharged me more than 600 last month</p> <p> </p>