You can return the card, because the card is damaged, so the deposit of the card is not refundable in 20 yuan, and the balance in the card can be refunded in 95 yuan (it takes 9 days to get it at the card return point). The key points of card return are as follows for your reference:

Wuluju 104 Road Station, Chaoyang District

Fuchengmen 335 Road Terminal, Xicheng District Fuchengmen 335 Road Terminal (after Wantong)

Xicheng District Exhibition Road Tram Company Gate Exhibition Road Tram Company Gate

Terminal 403, Beijing Railway Station East Street, Dongcheng District Terminal 403, Beijing Railway Station East Street

Shijingshan district yamenkou keliu branch gate

Chaoyang District East Bridge East Bridge No.28 Road Station

Xicheng District Zoo Hub Station 15 Road Station

Beside Liuliqiao South Gas Station, Fengtai District

Inner Ring of Caoqiao 300, Fengtai District

Dongcheng district andingmenxi 328 main station