No customer service at all

The Telkom mobile call centre number 180 has not been working for over a week now. I wanted to change my banking details in time for them to collect their premium. I had to drive a distance to a Telkom store to get this done. When i got there i was told that change requests for this month will only be effective from next month, which does not make sense to me because i contacted them more than 10 days in advance. I still don't know how they are going to get their money because the old bank account is closed. The branch told me to call the centre to make arrangements, but i don't know how i will do that because their call centre is not working.