Poor Customer Care Management

In the heart of Bryanston, we have a dead spot for cellphone reception. Both my wife and I are LONG standing Vodacom customers (20-+ years between us) - and i've raised the issue around poor reception 4 times (an email to customer care, 3 calls to customer care, 2 separate reference numbers). Becuase of the poor reception, I cannot receive calls when in certain parts of our home - then because Vodacom couldnt reach me ONCE - they simply close the case - not resolving it. That's managing KPI's not managing the problem. I am SO disappointed that they cannot resolve a simple issue like connectivity.

Reference numbers *** and ***