CDiscount FRACE - is not honest and cheating

Bonjour,

Sorry to write in English but you can discuss and write back in French.

I had problem with Cdiscount and I would like to have your advice.

I purchase a bag from Cdiscount cost 135 euro. Paid them by Paypal 30 April.
The bag arrive with damage, I return them on 23 May.
Cdiscount validate return and promise to refund me on 04 June.

but the refund never given. I call Cdiscount again on 03 July, they said they will not refund because they never receive my payment.

I call back, most of the time they said they have informatique problems and I must call back again.

This is my first time with Cdiscount and I experience that I was cheat. on this case, who can I contact? can I go to see French police?

Thank you in advance for any advice from you.

Cordialement,
irukjoey