Hi, I (along with many thousands of other people I'd imagine!) am at my wits' end with the utter incompetency of the Child Maintenance "Service" and following yet another futile and frustrating conversation with them yesterday I was wondering if anyone could shed any light on exactly how their calculations are made as this seemed wildly beyond the capabilities of the person I spoke to 
Currently there is a discrepancy of just under £200 p/m between what their calculator suggests I should be receiving and the amount I actually receive and to date their only explanation is that their own calculator "isn't exact" - I could accept this if the difference were 20p, or even 20 quid but £200 seems a bit extreme!
I work in hospitality for a little above minimum wage and am furloughed at least until May, while my ex husband is on a six figure salary so the extra cash would make a huge difference, I just need to ascertain whether I should indeed be receiving it. Any help or insights would be hugely appreciated.