Telkom - poor service

Good day About 19 months ago a took out a SmartBroadband Wireless 20GD deal - I only received the sim card no device - I phoned Telkom several times and ask them were must I put the sim card in - no devices in stock - I never used the sim card - I tried to cancel the deal but no luck - every month a receive a account of R455 for the sim card that I cannot use - that account is now R9050.40 Can you please assist me in cancelling all account with Telkom. My details Johan Olivier Account no: *** Account no: *** Email : ***