SAR made to a company and replied to by another company! can they do this

I was wondering if it is possible for a company to receive a SAR and have another company reply to this?



A SAR was made to company B who was a trading name of a Ltd company A



The SAR was replied to by company C who was also a trading name of the Ltd company A



I have many documents including a full written loan contract provided by company B after an application was made to them via a broker.



Company C replied stating that they hold absolutely no information on my personal file which is correct as i did not make a SAR to them.



Company B has never replied to any SAR made to them.



The ICO wrote to me stating that company B has adhered to the regulations and there is nothing they can do!



I have made a complaint to the ICO and explained that i accept the fact that company C does not hold any information as i have never in my life dealt with this company, I have also asked why they say that company B have adhered to the regulations even though they have not replied to any of the two SAR i sent to them.



Is it the case that if you send a SAR to a trading name of a company that any other trading name or the parent name can reply to the SAR or is it the case that the company the SAR was sent to should reply to you. As i said, company C has replied on behalf of company B to two SAR i sent to them.



thanks

SAR made to a company and replied to by another company! can they do this