Telephone Account

I have an account dispute with Telkom, but the dispute section on their website is not working. I had Telkom line ported to Oculus IP on 25 February 2019. Telkom technician phoned me on 25 February 2019 to tell me that the line was transferred. My opinion is that he did not collabarate it with accounts department.I paid the subscription for 27 February 2019 to 26 March 2019, which is a months notice. Telkom charged me again for 27 March to 26 April 2019 which I am not responsible for. Account no. ********** 05 - invoice ********** 476. Please investigate.