Debiting my account without my knowledge

I took out a laptop deal in March this Year. The Laptop was too slow and Returned it on the 9th April (Within 7days) along with the sim cards and Mifi Router.

Now 2 Months later I am being Billed for a simcard I capped and have not had since the 9th April 2018.

I have called in on the 4th June, 8th June, 14th June, 19th June and Again today. All times I have been told someone will contact me within the course of the day and I am still waiting for Either Shlengiwe or Michelle to contact me with feedback.

I need this money to be reimbursed as I was not notified about extra costs once I had the sim cards Capped.

Contact me Urgently..