Could be a number of reasons...
Service issues - check here https://status.o2.co.uk
Could be limited infrastructure in your area, due to NIMBY's, local councils blocking installs, no suitable land for a mast.
Could be the local topography...
Look here for how to help with network issues
Guide: How can I sort out my network issues?
Guide: Is the network down for me or everyone?
This is not customer services and we dont have access to your account
I do not work for o2 or any VMo2 /Telefonica/Liberty Global Company
