Telkom do no release expired contract’s cell no

Telkom Sim only contract expired in November 2020. On 13/4/2021 I went to cancel that expired contract and port my cell number to MTN. I was told I would have to wait a month.... that I did. So 1 of May came and I am ons pay as you go with Telkom and I buy airtime and data. Telkom still does not release my no so the port out of my number to MTN cannot be done....It seems to be an IT fault on Telkom side that they JUST do not fix.... have been to the store six times - and it takes time out of my day to do!!! To no avail - nothing has been done from TELKOM side. I have been in and out of MTN and we cannot start the contract with MTN because TELKOM DO NOT RELEASE MY NO!!! Is there someone I can contact to assist me???please can you help to sort this out?