Investigations without any progress

Blue label connect is failing me by not keeping they're promises, I have return the device on the 22 May and they are still deducting money! They told me the courier didn't deliver the device to them and now I must tell them the name of the courier guy n the colour of the shirt she wad wearing on the day, of which I did. They told me they are busy with the investigations but why they still deducting cos we are waiting for the outcomes! I'm about to take the matter to X-REPO because I can't just pay R449 every month for something that I'm not using. This is too much really