I now receive daily scam calls from 'Dave' at an Indian 'Talktalk' call centre.
I was a Talktalk customer at the time of the hack!
Shopping round for a call blocking phone I found this one.
BT Prices are
BT's advanced call blocking feature on the BT 4600 will block up to 100% of nuisance calls. Premium Call Blocking will not only let you block certain numbers but this will also screen all unknown incoming calls by asking the caller to state their name, then your hear the phone ring and be able to hear whos calling and decide to accept, block or send to the answer machine, giving you full control over who you talk to. You can also block while the phone is rigning or even while you are in a call with the one touch call blocking button on the BT 4600 Handset.
The advanced call blocking feature is powered by trueCall, meaning on the BT 4600 you can also Block by number, this allows you to block up to 1000 individual numbers. You can also choose the type of calls to block with the Block by type, examples of this can be mobiles, international, withheld, unknown, payphones numbers and also block numbers by area or suffix code. Sometimes you need that bit of peace and quiet and really don't want to hear the phone ringing then you can use the Do Not Disturb mode which allows you to turn off the ringer and illuminations, however if you still want those all important numbers such as family members to get through then just add their numbers to the VIP list and then the phone will ring if they call.