Ampere — Bad product

Address:	Ampere Vehicles Pvt Ltd, 150/ 1B, Nanthavana Thottam, Kannampalayam, Sulur, Coimbatore – 641 402, Tamil Nadu
Website:	amperevehicles.com/contact

I got one ampere rio e-bike on august, 2019...
just after completion of 1year, the battery deteriorated totally and giving only 10-15km/charge mileage instead of 35-40km/charge,
While buying, company said minimum 2-3years a battery will run, thats why i got it,
2 months back company charged rs 250/- rs even in my free servicing period because they had to check my battery it seems.
Then what did they check?
And why did they charge me even during free servicing just for battery checking purpose?
Really pathetic product and service.
Contact person- mr goutam kushari ([protected])