I paid £740 for a mobility scooter, but now it won't work

I was told it was broken and out of warranty because I hadn’t fully charged it once a weekI bought a £740 mobility scooter online from mobilityscootersplus.com, for my mother. She was only able to use it when I visited her every three weeks (I live 200 miles away). It worked fine on the first three short journeys. But on my fourth visit, the battery, which I’d recharged at the end each outing, was dead. I tried recharging it, but it stayed dead. The company told me that by leav