voluntary termination of car finance

[taffyboyo69]

hello

i need some advice please i sent my finance company a letter to voluntary terminate my agreement with them as ive paid 80% of the agreement.
i just revived a letter from them telling me the following which i don't understand

1.The termination of the agreement does not affect any liability you had under the agreement prior to the voluntary termination request.

2.Also that once we sell your vehicle you shall still remain liable to pay us half of the total amount payable on your hire purchase agreement.

thanks