Entered it only once and it worked. Tried using 02 WhatsApp but it was absolutely useless. Kept on receiving links and info that had nothing to do with my question. Was told to type in that I would need to chat with an 02 worker and when requested to log in,the site was down. Total waste of my time and quite frustrating.
Decided to go to an 02 shop and was told I flew out of the system after reactivating with my puk!!!. The competent and friendly chap gave me a brand new sim card with my old number and I was ready to go in less than 5 mins. Can call and receive calls now.
All net flat.
Tx for the tips any way.