Extremely unhappy customer

I have been a valued customer for 4 years and always try to troubleshoot my issues. I have been left with no connectivity for 4 days now. I have students on the property who need to do assignments and have been buying data. unfortunately all my tenants have given me notice to vacate due to Vox and their Vamatel partners not resolving issues. I have been logging tickets after tickets and get told that the matter has been escalated to vumatel. The allocated account manager has also gone silence and no longer takes my calls. I have lost business during this time and not sure to what extend will the damage caused will be.