Uselles vodacom fibre

I canceled my vodacom fibre in March before lockdown due to them never activating my line paid the cancelation fee then 8 months later they debit almost 2000 from my account for an installation fee the call center agent also couldn't tell me why it was taken 8 months later. Multiple messages to vodacom just to hear we'll get back to you soonest and nothing after that when i phoned the fibre department again they said it was escalated but nobody has looked at my problem