submitted pac however text messages / call not coming through to new phone

I purchased a new phone and want to keep my old number. I haven’t cancelled my old contract yet I submitted the pac code and it said submitted successfully however all calls and text are still coming through to my old mobile? This has been a few days now and it says transfer will be the next day? 
 

what do I need to do to get my calls and text to my new phone? and so I need to cancel my old contract with o2 if succeful in transferring the number? 
 

thank you