Spend limit increased without consent!!!

<p>I have a contract with telkom since 2015. I set my spend limit to R50.00 . However in June 2016 they notified me that my bill for July came to R1637 when my contract is only R499 per month. So I queried it and they told me that i went way over my spend limit so I asked how can that be when it is set to R50.00? I had also been using my sms function which says when I use 5 sms I get 100 sms free. so i kept smsing not realising that Telkom was billing me on this increased spend limit which i did not authorise. The sms's came to R970.00 !!! I had to pay all of that for something I did not agree to. I then logged a case but nothing was done (Your case no ********** 5 ) Once my contract is at its end I will not be upgrading and will never use telkom again.</p>