Sold item but buyer says didnt get it

[ILNY]

Hi

i sold a laptop, for �600 on a for sale forum website. I offered paypal as payment (i find this easier). I was emailed by a person, saying they dont have paypal but would it be okay for bank tranfer. So i agreed to this, and gave my details.

Next day, i went to post office and sent the laptop off to them.

Bout a week later, i got an email from them, asking where it was - i told them i had sent it with royal mail and it should be with them soon. (both of us in UK) , so for the past couple fo weeks, they have been saying they didnt get it, and are now threatening me with police and saying they will contact my bank and such.

Now, i wish i had av sent it with special delivery but they siad to send it normal. I offereed recorded but they told me to send it basic, so i did.

I think i have the recepit somewhere but im no sure if i do.

Any ideas on what i should do? should i be worried that ive lost my laptop and i will be forced to send the money back?

any advice would be good.

[jack daniels]

SD covers you up to �500 but there are other options available for items of more value which you can enquire about when sending items of value