Terrible service from MTN

This is a medical practice!! I have reported the poor coverage at my practice on Tuesday 3 December 2019 (***). Up to today 6/12/2019 at 15h30 nobody has attended to the problem or even phoned me athough it was so-called "escalated" due to the urgency. The coverage shown on MTN's map is a joke. I can't from my cellphone even phone my landline at the practice! There is almost 0 coverage (De Waterkant, Cape Town). When are you going to send somebody to come and verify that the coverage is poor and install a booster? Or is MTN waiting for a patient to die first?