Hi Ventor. Regarding wife's Galaxy 22 we will contact o2 again. Regarding my problem, I'm afraid these calls keep coming. As you suggested I cleared the cache but am reluctant to clear the data. Will I lose all records, contacts etc.?
Hi Ventor. Finally sorted. You put me on the right lines. Somehow, probably because I am stupid, my phone ringtone was added to my WhatsApp messages so it rang when I had a WhatsApp message. Noticed the coincidence this morning. Thanks again for your interest.