Got an adjustable that didn't work

I had a mattress and two adjustables delivered on the 14th of December, the delivery guys didn't rest the adjustable as there was no twin plug, it's a newly built house, not yet furnished and we hadn't moved in. on Sunday the 17th, we tested the adjustables and found that one was not working,the other one worked. We tested the wall plug, remote batteries and took out the battery from the adjustable that worked and used it on the other adjustable and it still did not work. I then contacted vencasa design quarter to inform them of this. Unfortunately we had a break in on Tuesday the 19th and the cable from the adjustable that was already not working was cut by the ******s, and now vencasa wants to charge us to fix the motor for the adjustable? the cable was not cut from the motor, it was cut in the middle. I don't understand how they can say we need to pay without having looked at the motor in the first place. We can pay for a cable to be replaced but not for the motor to be fixed when it never worked.