76203625_ling_features____TalkTalk_Help__Cost
[Feature] 1471 then 3 [Description] Callback your last received call without redialling [Cost] 
20p per call, plus usual call cost
F r e e
2 0 p p e r c a l l , p l u s u s u a l c a l l c o s t
How much are calling features? | TalkTalk Help
Cost