Vodacom barred my calls and they are unable to rectify their mistake

Vodacom barred my calls without a legitimate reason, I don’t owe their account. I called their call centre and spoke to nonhlahla kunene, who offered an apology , their system mistakenly blocked my calls. As I type this, I’m still blocked, they are not resolving my issue. I am unable to make phonecalls, I’m losing income due to their mistake.