Unhelpful after years of business from me

I, due to financial reasons, cannot afford my current plan so requested to change to a more affordable option. Was told I missed the change period and in order to apply (not guarenteed) I must provide my Financials and monthly expenses etc. This is very rude. Circumstances change. How atrocious to make such personal financial demands. I cannot change options so you have now lost my business which is apparently acceptable to Bonitas