Boat — About my beats headphone bluetooth boat rockerz 255 not working and service center not available same produced

Dear sir
I have bought a boat but now it does not sound like 2nd side, if I report it to you online for repair, it does not happen due to lockdown, it does not happen, but you are accepting the complaint of other models, then what is the problem

My sister has taken boat 235 bluetooth it was damaged so she complained online for repair it was taken but for my bluetooth boat rockerz i have been complaining for last 2 months is it not taken? My sister and I have the same address, so what's the problem?