Amazon India — Not able to use my prime account

I have a prime account on amazon with account id as '[protected]@gmail.com'. I created one more account on amazon which is a non-prime account and provided the same mobile i was using for the previous one. But now i am not able to login to my original account and getting the error 'mobile no. Associated with another account'. I have raised the issue with amazon customer care, talked to them over phone, tried to resolve the issue over twitter but i am not getting any solution from their end. I am a regular customer of amazon and don't expect such glitches on their part. Kindly get my issue resolved asap as i am not able to use the prime membership perks.