Swiggy — account number changed automatically when trying to create another new account

Address:	Krishna, Andhra Pradesh, 520007
Website:	Swiggy

Ok so i have a swiggy account and super member too! I regularly order food for my sister who's residing in another city, so she's too logged into my account but today she wanted to create an account for herself in swiggy., now the problem is swiggy didn't create a new account but for worse it fused her numbe with my account!! Now, if i try to login with my number it shows already used number 6 months ago!! So where's m account now??!! Gone with wind??