Bad expirience for client services and sales

i must say that my experience with Vodacom lately has been very disappointing which is something that i have never encountered before. a month ago i logged an incident advising that i have been billed incorrectly and i needed statement to be sent, i have not heard anything from that day till this day. I then app**** for a second contract which was approved but 3 weeks later nothing has happened. Maybe this is where i should end my dealings with Vodacom and move on.