For about the last 6 days I have been unable to contact my husband (both O2 iPhone to iPhone) on his mobile using both calls and WhatsApp, I get number busy tone despite it not being so. We have both tried other numbers with success and others can call him ok its just me to him. He has contacted support and carried out all the checks, call blocking, do not disturb etc, reset his phone and still no good. O2 sent out a new sim which we swapped yesterday afternoon with no joy. The signal at home is very patchy and twice he asked to be called back on our landline when the call dropped out, but no one did....very frustrating. Any ideas please? Thanks
