Sour milk

I'm disappointed with the service I received from C***** regarding their products.<br> <br> On the 24/03/2016 I purchased 3 bottles of full cream milk from my convenience store that had an expiry date of the 28/03/2016 and upon opening them they were all 3 sour and the store refused to refund them and said I should contact c***** directly.<br> I purchased on purchased another 2 bottles with the expiry 03/04/2016 on the 28/03/2016 from the store thinking its a fresh batch and had the same issue. At that time I immediately sent a email to c***** advising them. I obviously didn't want to keep sour milk and threw it away but c***** is more than welcome to ask the store in Lenasia called R&M supermarket. I received a call today from c***** asking for the details of the milk which I already disposed of and no longer has. I am disappointed that none of them are willing to refund me for something that was not in my control and no where did it state that I should keep the milk as proof. If the store had refunded me I wouldn't had even contacted c*****.<br> I look forward to somewhere getting back to me regarding this matter.