I have a Sony Xperia XA1 and I have been on the same contract for 3 or 4 years now. The signal has been fine up until a few months ago. The Internet works fine but I very rarely have actual phone signal and I am really not happy with this service.
I can very rarely ever send a text message and get error messages back almost every time. I have a voicemail notification which has been there a week now and I have tried no end of times to answer it but it will not dial. I have no idea who has sent this or what it says.
I have been on the website and followed the trouble shooting checklists and nothing helps. Can you please sort my network out because I am not getting the service I have paid for