Micromax Canvas A111 — Mobile hangs frequently & many a contacts havegot joined

Address:

Patna, Bihar

Sir, I purchased a Micromax canvas A111 having IMEI 1 : [protected] & IMEI 2 : [protected] in Dec 14. Since then the set is having problems like-area around back camera getting heated, set getting hanged. Gave it to service center in patna.Center returned it after one month.Problem is still unresolved.I am fed up wiyh this set.Unable to know what to do.Kindly help.