Harassing messages even when I payed Telkom

Horrible interaction with me.Sends me so many unpleasant threatening messages that I owe Telkom and will take me to court even when @Telkom debited.I called them and they expect me to send proof of payment.Basically accusing me of owing Telkom without the right facts… I even cancelled the Telkom contract and would never like to take any contract with them due to this harassment issue coming from Credit Berau