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My friend has forwarded their calls to my phone. Is it possible for me to cut the forwarding so I do not receive those calls?
I have tried ##002# but this only works on the phone you are forwarding the calls FROM (my friend's) not TO (mine).
Unfortunately, as the calls are forwarded from your friends phone, the cancellation will need to be done from your friends phone and number. There isn't really anything you will be able to do to cancel the call forwarding.
There is further information here: How do I manage call diverts? Text your friend the link (providing your friend is on Vodafone).