Internet banking problems

I have had a lot of problems recently with both my credit and debit cards being rejected when attempting internet purchases.

An example was when,following a suggestion from a poster on the forum I tried to order some aftershave from'Strawberry'. Both my cards were rejected.

But an attempt for payment was made to my bank for payment!!.The bank checked with me for verification.

I am not naming my UK bank,but they have informed me that Strawberry have been known to them for many fraudulent actions,

I also note that since my assessing the Strawberry site,Their adverts are constantly popping up on my computer.

My computer seems to be clear of any nasties being protected apparently successfully.