personal iphone texts, calls coming through on work phone - how to turn off?

I have set up my personal phone to include my work Outlook account for messages, contacts etc. But recently the information is going the other way - my personal texts and calls are coming through on my work phone!! It only recently started to do this and I believe an update of iOS caused it. HOw do I stop my personal calls/texts from coming through on my work phone? HELP PLEASE !

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