I am Samuel and I will help so you have one contact name and two number but can not delete the old?
Ok go into the contact as if you are going to edit and tap more manage multiple accounts
I am sorry. There is a more option or on some s5's the more option is represented by 3 vertical dots. Once either of those options are selected you want to look for the option which lets you control multiple accounts. The exact name may be different however look for something that states manage more accounts or linked accounts.
Have a great evening!
I think you may have to call in for a tech to troubleshoot over the phone line with you. Or if you are up to it check out this article http://www.sebertech.com/2014/07/cannot-delete-contacts-on-samsung.html
Was the article any help? I am sure I could get you a solution but I would need to know what the options are that you see on the different screens. There are many different versions of android's operating system. The information I see may be a newer or old version than what you have running on your device.
I am District Manager for 3 of them in WNY. Your issue is a data recovery issue not a service issue so they won't do much honestly. I hope for the best however! Best wishes!
I am sorry it is not data recovery. I got two questions mixed up. They may be of service in your case!