Telkom has the worst customer service

Since I joined Telkom in 2018, I have never had any issues resolved efficiently. I regret ever starting contracts with them. They have caused me so much stress with every encounter.

In 2019 I added a data simcard to my already existing contract and Telkom messed up my order. They assisted me to make a new order and a few days later I receive two sim cards. On my bill I am being charged for twice the amount.

I called Telkom to ask what is going on as I only used the one simcard. They checked and said I will be refunded. After calling and logging multiple faults/complaints, I reversed the money back. But later paid them again as my credit score was on the line. No refund was made till today.

I recently cancelled my insurance on one of the devices after the contract expired with Telkom - thankfully no glitches with that.

I received my cancellation proof from AdminPlus and 3 months later I am still being charged for the insurance. Telkom customer service tells me there is nothing they can do, I should contact the insurance.

Sent them the proof twice already nothing.