Wrong disconnection

Good evening on 30th May I paid my father's account and on 6 June they disconnect the service I called them they wanted proof of payment I then emailed then they reconnect the service. On the 11th June they disconnect it again I called they recommended and apolozing for the inconvenience but again on 13th June they disconnect it when I called they promised to reconnect and apologized again but still no recognition was made till now. They requested my email address to communicate with me but no communication wasase