Terrible service, no repair since 09/12/2015

My sisters reported their the line out of order on 09/12/2015. Since then the call has been assigned to four different technicians BUT nothing was done. My sister suffers from Epilepsy and is dependant on the phone to be operational, and I stated it several times when I called the Call Center, but still no response. If something happens to my sister, I will personally hold Telkom responsible. Very TERRIBLE, BAD service.