My Dell laptop just cross three years in June and the extended warrantee also got expired. The battery has been deteriorating with only a few mins of backup lef

My Dell laptop just cross three years in June and the extended warrantee also got expired. The battery has been deteriorating with only a few mins of backup left. Called up the customer care and they asked to instead contact nearby service center. Tried with multiple in Delhi NCR and no one seem to have a battery – one of them said that no battery is available right now (God knows why?) Finally, somehow got one via Amazon supplied from a state 1600 KMs away from here for about $80 in a week time. It could very well be expensive than the one gotten from the service center but, was left with no option.