Telkom - Impossible to cancel contract

I am trying to cancel my Telkom Lte contract, as I do not longer need this service, as I know have Fiber. The contract is also past its termination date already . I have visited a few Telkom branches already, but none of the staff was willing to help. They just simply say that I must cancel my contract online. I have visited there website a few times already, but as a Ux Designer myself, I honestly do feel, that they are making this proses unnecessary difficult. Obviously done with the intention that the client will simply give up on this process and continue with the contract. Is a Telkom client, I want assistance, so why must I go through all the troubles of canceling my contract online. This is super bad customer service. I need my contract canceled.