Connot put a spend limit on your contract!

I took a contract with telkom, the sales consultant had advised me that it is an open line contract if I need to change this spend limit I need to do it via the telkom app, Telkom sort out your app!!! It has an option to change spend limit but it redirects you to another page! Your customer care line does not give you the correct option to put a spend limit on contracts.

Please assist me if not I will cancel this contract with any payment, I have 2 other contracts with you guys I have no time to keep calling and holding on and cannot get a hold of any customer care provider