Telkom robbing consumer

iI have been trying to resolve an issue with Telkom since 2 feb when I lost my internet due to various faults. I spent a fortune on data as I work from home and spent a fortune on airtime and my time calling help lines and going to Telkom stores for help. I eventually cancelled my internet and landline. They assured me that once my line was disconnected I would be refunded. My line and wifi have been cancelled from 16 April and disconnected from 16 May, after having no service from 2 February. Telkom have debited my account right now for R580 for WHAT? Telkom owe me money!!!! Does anyone have a number one can phone? ????????