Very poor service

I,ve been a customer for at least 6 years without much really to complain about,however Ive recently been experiencing problems with the connection and havent received assistance as yet. So for the past 2 weeks or so Ive been issues where the connection drops literally every 5 -10 minutes. As I type this message I'm currently down for about 15mins. Called in on Monday and after over 35mins on the call was advised I would get a follow up call yesterday and hopefully resolution to my issues. To date absolutely nothing. Also I think it's ridiculously absurd that since last year no one can tell me what my monthly usage is as the app does not work like it used to. If memory serves ne correct we have a service agreement when you supply and I pay,so the way I see it why should I keep paying when you are failing pathetically on your side. Quite happy to change to a different service provider if you cannot keep up your end of the deal. Kindly respond asap so I know if I should be cancelling with you. To be paying almost R800 a month and to get this sloppy service is not on.