Cell C Refuse Credit for Fibre Service that was down

My review today is a warning to new Fibre Clients. C-Fibre is great when it is working. The problem is that they cannot supply the service I pay for. Between May 2019 and July 2019 my Fibre was down for 31 Days in total. Cell C will not Credit me for the time the service was down as they take no responsibility for the Fibre network itself. Cell C Invoiced me for a Full Month in July when the service was down from the 26 of June already. I have an agreement with Cell C and they have an agreement with SADV. My main Concern is that I have a contract with Cell C, I am invoiced by Cell C and my Debit Order is received by Cell C. All Problems are referred to SADV and Cell C will not take responsibility for the Agreement they have with me as Customer. I have been told that SADV has a cable break and that Cell C will not Credit for Service that is down due to Cables. They can also not provide the speed that you pay for. When I phoned the support number, they informed me that SADV is having a problem and speeds are slow.