Food Delivery + ZohoCRM

I've been using the free version of Zoho for a while, and I think it's time to upgrade.

I'm sure I might be doing something wrong or I'm lacking some features

I deliver frozen food, 2 days a week.

For this I create a new task for the contact who orders me with

- date he receives as Due Date

- what I'm sending and at what time he can receive it in the Description

Is there a better way of doing this??

I'd like to track what customers buys (the way I use it I have no record of that), and delete it from an inventory (i do it with a paper and a pencil)

Can someone please point me in the right direction?

My customer list is growing and everything on my end is very messy.

Thanks,

Gerardo