Case study #$1$

A customer complaint has main following issues:

$1-$ Delivery late $7$ days.

$2-$ The quality is bad for the products $($general looking$).$

$3-$ There are differences in details from our request.

$4-$ Product with code $003$ need modifying from $120cm$ to $121\mathrm{.}5cm.$

Please we need clarify for the above points and action for point # $4.$

Q$1$: give your feedback for each point, and what your action plan?

Q$2$: analysis the problem in point $(2).$

Q$3$: what are the reasons for point # $3$ and how to insure from this complaint?