Poor fibre installation

I've had fibre installed to my home nearly 3 weeks ago and it's been a nightmare ever since! My ont box flashes and loses connectivity almost every day. I've called Vodacom numerous times to either log or follow up on the fault and it takes at least a week for Vumatel tech support to come out to my house. On 2 occasions they've gotten readings on the ont above 40 when it should be below 9. By the time the tech leaves, I'm connected only to be disconnected during the course of the night or the day after. Unplugging the unit and waiting for 10 minutes many times over does nothing! Occasionally I'm lucky when everything turns green! I work from home and stream dstv to my tvs, this has been a huge inconvenience to say the least! If the ont cannot be replaced with a new box and istallation done properly, then both Vumatel and Vodacom needs to collect their equipment and I'll revert to my telkom LTE. Calling Vumatel directly is completely useless! Fix this mess!!!