So helpless with Tracker

I've changed my banking details and called in to update my details with Tracker, and arranged that I'll make an eft payment on the 25th of June, I did but they still made a debit on the same date. So which means I've been billed twice for June.

Therefore I called in immediately after I've noticed a debit that was made, I spoke to one of the call centre agent and he put a query and that my money will be paid back to my account. We exchanged emails and he's been quite since, I'm not getting any response from him and my money is still not in.

This is the most helpless service for consumers/customers. I've called Tracker 4 times already in the last 30minutes and I've stayed on the line hopelessly with no assistance.