Business ProfileforAddmotor Tech Inc

I purchased a e-bike from Addmotor via Amazon on 3/29 and received it on 4/10. $1800 Upon assembly the bike was defective and would not turn on. Addmotor wanted me to trouble shoot and take the bike for repairs originally quoting me 20 business days for a new part and that they would reimburse me for the work done. I did not want to do this and requested a refund or a replacement bike. They said fix it or return it. I opted to return it and asked for a prepaid return label. They did not send me a prepaid label so I purchased a label for $557.20 to send back. Once the bike was already in transit they said, oh we would have given you a prepaid label. Now Im out extra $$. Addmotor said i would get refund when they received the bike. Now they are saying they need to test all the elements of the bike before they will refund me.This has been ongoing since 4/11 and I need a resolution that will be a full refund for the bike.Amazon said they would cover the cost of the return shipping but now is saying they will not cover the cost. Im filing a separate complaint against them to cover the cost.I have several documents, that would not upload