Sick and tired!!

Honestly for the level of bank charges I pay I'm quite upset with the service I've received from Investec. I have a forex transaction query that has been pending for 13 days now!! I have spent over R100 in airtime and spoken to at least 7 people from their Customer service team and had to explain myself to all of them. If it's empty promises to call me back it's agreeing on a course of action and then Investec not honoring that agreement to being sent from pillar to post. The service I have experienced is grossly sub-standard!!