That's likely not down to the tool, more likely a complex requirement you understand but they don't. (And are you sure you're getting the right answer? IIRC an analysis showed 10% of spreadsheets have errors - devs do care about good results, and that does take extra time)

> Where a programme solution is static and needs tons more hours for every change needed.

Hmm. Sounds like there's something wrong here, with your guys or some aspect of the business (and sure, excel is not a bad tool, just to be clear).