Pathetic Service

I am unable to view balance on one of my numbers on the iPhone App or the online webpages. I have been reporting this problem for 3 months. I submitted a screenshot as requested a month ago. Nothing whatsoever has been done to fix this and there is no feedback. Every time I call to follow up they then think that was when the problem was first reported - I called for feedback on 9th May and yesterday the agent said that was when I reported the problem!! It’s been 3 months! Non existent service - pathetic.