Japanese Shopping

この度の購入品には少々不満がございますので、直ちに交換の手続きを進めていただきたいのですが。

Kono-do no kōnyūhin ni wa shōshō fuman ga gozaimasu node, tada-chi ni kōkan no tetsuzuki o susumete itadakitai no desu ga.

I'm not entirely satisfied with this purchase and would like to proceed with the exchange process immediately.