INSURED PHONE TO BE REPAIRED

I purchased a cellphone at Foschini, less than a year ago, and also insured the phone. Now the phone is giving me problems and Foschini Lakeside would not assist as I misplaced the receipt, even though I still have the original package and I took the phone on an American Swiss account. Foschini FB page is not useful they take decades to revert with feedback. Foschini customer service is also not useful!