Good evening,
A friend has a vodafone (NL) mobile number.
I signed with KPN on 17 March and had no problem to phone him until 19 May. The last time a call was successful was on 19 May.
Ever since 19 May, I have been getting a busy tone when I try to dial his number.
Phoning his landline is not problem, and other mobile numbers work.
Any idea on how to resolve this please?