Negligent and malicious damage

They are installing fibre in our area i already own Vodacom fibre which we use to run our online businesses. Theyve just hit off my fibre line which runs into my home resulting in a loss of income for us and extra expenditure to try create substituted plans so that we can try and continue to work. Its malicious damage to property and will take time to fix so id love to know who will be taking accountability and reimbursing us for our loss of income in this instance