C***** doesn't care ,poor customer services by Lovedelia

Few weeks ago I purchased super M milkshakes and upon consuming it we noticed it had a bad taste ,when we smelt it ,it was off as in spoilt ,emailed c***** consumer care on the 21st of September and they responded on the 25th of September asking for a list of details, however on my original email I sent a picture of the receipt and pics of the barcodes as I knew that those details were important, ever since then I've been receiving emails asking me for the best before date and manufacturing date ,i did see the best before date on the day we noticed the product was spoilt but I didn't remember it and have thrown away the products by then , I keep receiving emails for those details which I don't have, I also get calls from them which I miss because I'm at work but when I call back their call center agents have no idea as to why I have been called ,I even give them my ticket number and they still don't know why I have been called or who has been calling me , this is absolutely frustrating because I feel like this is being dragged just for two pieces of information I cannot provide ,even giving them my proof of purchase means nothing ,c***** clearly does not care about customers and they have handled this matter in a very poor manner, their complaints handler Lovedelia doesn't read her emails properly aswell and has been a terrible complaints handler .they made me feel like my complaint isn't valid and made me feel like a **** even though i gsve them proof of purchase and pictures of the product