I have phoned them several times and got the "We are very busy" message and then disconnection. Can I ask when you did this? Fairly recently?
Applied for change of address 3rd week of December on line, my partners licence came back in 4 days. After 6 weeks I phoned got straight through, chap said ah there was a problem with your application and I've sorted it. Got my licence back 3 days later. Renewed my partners licence this Monday (over 70) it came back this morning.