Migrating from Skype Numbers to Team (Headache)

Due to the discontinuation of Skype, I had 2 landline numbers I wanted to move over to Teams as I didnt want to lose them.

The process has been anything but straight forward and such a headache.

As a bit of background, I had the Skype numbers due to my location having poor mobile signal, hence any incoming calls would divert to my Skype numbers and then I could pick them up via my desktop.

When purchasing the Skype numbers I did so for a year, and used the PAYGO credit (rarely) which has now obviously been discontinued). I rarely need to make outbound domestic calls, i never need to make international calls, the aim was literally just to have inbound calls.

My understanding was:

1. I would need to port the numbers (which I've successfully managed to do) from Skype to Microsoft Teams
2. I would need Microsoft Teams Essentials and Microsoft Teams Phone Standard - having talked to presale and post sales support they said that this would allow incoming calls but that a call plan would be needed for outbound calls
3. When the numbers were ported in, i've then been told that you can't actually assign the numbers to a Teams account unless you have a call plan - I was mislead by support teams highlighting this was possible.
4. I've then been told that I don't actually need to upgrade from Teams Phone Standard, I only need a calling plan.
5. I thought the options would be upgrading Teams Phone Standard to Teams Phone with pay-as-you-go calling (country zone 1) or Teams Phone with domestic calling (country zone 1 - UK/Canada) however I've then been told that I don't actually need upgrade from Teams Phone Standard, I only need a calling plan. On querying further i've had zero response and I've been unable to find any calling plans that don't involve upgrading Teams Phone Standard.

Can someone make sense of all of this?

What is the cheapest option to having inbound calls to the landline numbers coming through to my Teams account?

The amount of business that Microsoft must be losing as a result of no straight forward, easy way to move over the Microsoft Teams with an existing number from Skype is mindboggingly. I'm guessing they don't want to make it easy simply because its not profitable, and its Teams Business at scale where the money is!