Flipkart — Unable to login and shows username and mobile number is invalid

It's time of about approx. month of november i received an email of ordered purchasing 15 gogle playstore cards from flipkart in the mid night (2:00 am), on next morning i received a message that order is out for delivery, then i checked in my flipkart app that there are many ordered in queue (total 15) of aprox. rupees 15000. After confirmed from relavites that no one will purchase these orders then i call to flipkart customer care that this is happened to my account and i am not do this kindly cancel these orders which is in queue.they clearly say ordered not cancelled by us and today some are out for delivery . In reality there is no order reached in home and no transactions deducted from my and my family members account. They said there may be your flipkart account hacked by other so kindly changed the password and other formalities. i do the same as per flipkart guidances. after that incident happened i am not login to my flipkart account. and i also talk to flipkart for this that i am unable to login my account then they told me that we put request and your account will be re-activated in 1 or 2 days, and now my username and even mobile number showing invalid when i trying to login but problem still not resolved. after getting hopless and checking the feedback i come to this site and hope my account is also re- activated.