Terrible service and poor speeds

All Vumatel have done is try calling me at 19:30 on a Friday to tell me once again that this is not their problem but the ISP. This is after I explained to them more than once that I have already contacted my ISP who themselves contacted Vumatel to complain. Vumatel did not even bother to actually pull up my original complaint! Till now I still recieve terrible service and speeds and NOTHING has been done asside from blaming others. My parents who also have Vumatel but a different ISP to me are experiencing the same issue. Who else can provide me with fibre in my area? I will disconnect from Vumatel the second I can and I strongly suggest to everyone who has Vumatel to do the same. Extremely disappointing. I am now asking for the fourth time that a technician is sent to my house to see what Vumatel's issue is or will you be calling me again just to make me repeat myself again and again just so that you can blame the ISP?