No Signal in Barberton Poor service from Vodacom

We are battling with poor and sometimes no Vodacom signal in Barberton Mpumalanga. We cant use our phones and do business like this. We need Vodacom to urgently investigate and fix the problem. Otherwise it leaves us no choice to move to another service provider. Please Vodacom send a technician to investigate and find the problem urgently. Everyone using Vodacom are complaining and have reported and called and emailed yet nothing is being done.