We had purchased APC B1850SINE-in wave ups with tall tubular battery 180AH. on 24 Jul 2019. UPS serial No. 19IAG5C1022534, Battery Serial No. GF19847969. We have tried contacting the seller by phone, from our email and whatsapp since 25 December 2019 that is available with them but they failed to respond to our registered email […]