Paid same invoice twice

I received an invoice of R409.80 for July 2015, and I make the payment of R410.00 the appear on the 29th July 2015, but my line was locked on the 18th August 2015 and when I called they did say that payment reflects but my line was not unlocked until the 27 August after my account was debited with amount of R696.90 which is R409.80 plus the August invoice of R287.10. I've spoken to team leaders and called endlessly and locked a case the ref is ***6, I then received an sms on the 6th September 2015 that my case have been resolved. But the have not resolved it because I my account should be in credit and not apology was send to me regarding my line been locked and I wasn't suppose to be locked. I need my account to be fixed and would like Telkom to compansate me for locking my line