Hi Mikeshaw43, thanks for the message and welcome to the forums.
I am sorry to hear that you are having issues with incoming calls and this is not the experience which we want you to have with us.
Would you be able to confirm if this is regarding the Mobile or landline and if you have numbers blocked on the handset?
Can you confirm if these are numbers saved in the phone or unknown numbers which are randomly calling?
Have you tried a network search to see if anything changes?
Do you have an alternative handset you can put the sim into to see if it makes a difference?