MTN broadband network services never available

I upgrade from a 2GB to a 5GB contract with Altech autopage but just don't seem to getting any benefit from my data. I am finding that I am having to buy data for my mobile devices which was meant to be less because of the upgrade. I have been unsuccessful when contacting the call centres and really feel that I would like to port out or cancel this contract with immediate effect. My expectation is a great disappointment of services received where this has not been the case previously. I feel that I have made a huge mistake in renewing this contract and would like some assistance to get out as I feel that I am wasting my money on a service that is not doing me any good. Agents are quick to get you to sign up for an upgrade but when you in need of some answers the buck just gets passed on and then you get a silence and eventually you hang up and no-one on the other end answers.<br>