Sorry slow network although on the Top Tenier

It is tire ding phoning your call center and we'll get our networks guys who is none existent to phone you back. I've upgraded a 2months ago from the R 699 p/m package to the R999 p/m package with the same old speed (really felt being ********** ) and that the matter can be resolved with the first technician whom did a very poor installation.Our current wireless outside router is at -90dBm(pathetic to say) and when i initially told him that is should be anything between - 58-67 dBm to have a proper connection.I was then told when he went for his training he was told that one should be lucky to -90dBm .... Really ???????????????????The network and all your client woes will be so much better if the technicians are properly trained in the first place.