I am sorry to hear that your phone is not working as it should ​@Sharon Robertson 
Your phone is covered by a 24-month manufacturer warranty. If there is no physical damage to the phone (such as a crack or liquid damage) then we will be able to assist you with getting it checked.
Please take your phone into any Currys store. We will then be able to assess your phone, and if we can't fix it there and then, we can send it off to be repaired at our Repairs Centre.
We would advise that you back up your phone and keep hold of any SIM and/or memory cards you may be using in the phone.
When we repair your phone, it should take no longer than 14 days. However, if we need to send your phone to the manufacturer directly, this can take up to 28 days. Additionally, subject to availability, we may have a loan phone we could lend you. This way you would not be without a phone, whilst you wait for yours to be repaired.
I hope this helps. 

Hi ​@Sharon Robertson 

Here is some info with regards to the problem you are encountering:-
https://www.samsung.com/uk/support/mobile-devices/what-to-do-if-your-phone-is-not-charging/

These are some suggestions from other owners with the same problem:-

• Turning off dynamic battery (also called "Adaptive Battery")
   
•  Toggled fast charge off and back on, plugged the phone back in and now working.
   
• The Solution! What i did was deleting all data files from these apps below.

Go to app info and delete all cache and data.

-device care app

-modes and routine - i highly suspect this is the culprit!

-routine+( Bixby routine)

-gamehub - it might be that PD BYPASS interfiers.

Uninstall

Battery Tracker

Battery Guardian - this also is highly sus. Kill it.

Thermal Guardian

If you have downloaded any apps recently in the last days also clear all data and cache just in case.

Now go to the phone dialer and type in *#9900# Scroll all the way down and hit reset battery stats. Exit and restart.

If all else fails, you can do an internet search e.g. Samsung Galaxy s24 phone not charging properly as there is a lot of information out there with regards to this.

Good luck x