Intex Mobile / Intex Technologies — Battery swelling in 3 months

I had purchased a new Intex Aqua Speed mobile from local distributor in Pimpri, Pune 3 months back & within 3 months its battery has been swelled. I had given this battery alongwith mobile for replacement to its Service Center 'Cell Care services' at Masulkar Colony, Pimpri on 9th of Nov. 2015.That time they told me that within 10 days I would get the battery.But till date (after 21 days) I have not received the same.Whenever I asks for the battery they says battery hasn't come & asks to call customer care.Customer care also not firm on the delivery of the same. My Jobsheet No. is[protected]T001 dtd.9.11.2015 Pl. replace the same on urgent basis. The charm o[censored]sing new mobile has totally gone.