What is happening to our Internet

Good Day, We have had problem with our internet speed for a while now. Logging faults and we are told all is fine when clearly it is not. If your browser wont open a page then you know something is wrong. Posted a comment on twitter on 28 August and got a response, we will get back to you. I came across an article on the mweb network status notices page that said there is a problem internet all no's starting with 031763 are affected??? We work from home and rely on a good stable connection. Please investigate urgently and advise what is going on.