Poor service

I made a car service claim refund on the 13th of November, called the following week and was told to wait 14 working days. Did as I was told, nothing happened. I called again on the 4th of December, was told my application has not been authorized because there is no slip on my invoice. I sent the invoice with a slip on the 7th of December, nothing happened, no respond. I called on the 21st of December, the operator told me she's going to find out what's going on and call me back. She never called back! I called again on the 22nd, was told the same thing, only this time my airtime cut me off. Today I've been holding the line for more than 5 minutes because no one is answering. So disappointed by the Innovation Group, no feedback, just poor customer service.