Maybe Akash is the one who has kidnapped ASR because he might have come to known about the original will (which ASR might have kept safe in office and he had a chance to have a peek or known from his advocate) and after knowing ASR has left all of his properties to Anjali leaving nothing (or minimum) to Akash and Payal, he might have turned evil..wondering why his brother took this decision without even asking him.
With no ASR, the AR business empire is his and how can his brother ditch him like transferring all to Anjali after Akash being loyal with him for so long.
Moreover, he is the one who does not know that all is not well between Kushi and ASR and so made arrangement to send the message to her phone so that it would calm her, as a normal husband would inform his wife.
Also he might have hinted the kidnappers that he would give the alert to when make ASR call the family and when Anjali was abt to call the police, Akash dialled some number and so it might be the alert call to make ASR speak to them.
Meanwhile ASR does not know about this and gives hint to Anjali by saying he is in Scotland. Still Akash without showing any reaction just talks normally and passes off the phone to Kushi.
Maybe this is the reason for his weird and angry behavior with Payal of late (mentally restless with this plan in his mind) and with ASR's absence he is also trying to work things out with AR.
Before ASR left to London, he also had some papers to be signed by ASR which Kushi got signed along with the will papers, and it might be some other documents that Akash also had tricked him to sign.
So Shyam is on his track himself (will), wondering who did this and afraid abt the will matter when speaking about police and eloping then and there.
Akash might be the boss who doesn't want to harm ASR and instructs to give medicines and take care of him.
Kushi finds this out and again hides this from ASR to prevent a heart break knowing that his brother has betrayed him...
Just a guess. Share your thoughts...