I will hold off on asking for a refund.
But I am very unhappy of the downgrade to SD622 from SD835!
And especially unhappy about how you as a company have handled the situation towards me and us as customers.
You need to explain your situation, background, constraints and thereof choices openly and honestly.Not in intentionally muddled and veiled, almost nothing saying, sugar-coated, typical corporate official speak.
Be upfront with the downsides, just as well as you're being upfront with the upsides of the change - otherwise you just appear disingenuous and dish