Connectivity constantly dropping

Honestly MTN how do you manage to have your network give me 3 bars connectivity one second and for it then to drop to one or nothing whilst I am standing in the same position. <br> And no, I am not talking about one particular spot. <br> I am talking about Bedfordview, Sandton, Centurion, Fourways, Cape Town, in fact blo....dy anywhere. <br> The only thing that makes sense is that you have not spent money putting up enough towers so as it gets congested it simply drops connections. <br> Please explain to me why my supposition is wrong.