To be quite honest I gave up reading your moan after the 10th spelling mistake, though I did look at your sold listings and at a guess I'd say you should be registered as a Business, not Private, seller.

A contact number written out word by word and payment by cash on collection or cleared (not 'clered') cheque are both blatant attempts invitations to do an off-site deal.

Frankly, the sooner you either leave or are banned from this site the better.