Failure to deliver FTTH service at agreed speed

On the 19th September 2017, I logged a call with the Technical Centre advising that I am experiencing poor internet speeds. On the 20th September 2017, I called back to inform that this slow speeds occur in the evening from 18:30 - 00:00. Every evening thereafter, i have been updating the MWEB Technical Centre, with my speed test results. Today, 26th September 2017, the fault is still not attended. The Technical Support advises that its is a Telkom issue and that its out of their hands. Let it note that I signed a FTTH contract with MWEB and not with Telkom. I am disgusted at MWEB service - all they have done is pass the buck.