Phone scam for buisnes's

Ive recently started my own buisness .Wootton Grave Tending . And have advertised on google etc. Ive had a number of phone scams contacting me.

The Scam

A women rang me saying she was my local communiy police officer later i found out she was from liverpool, She said that they were doing a local magazine and asked if i would wish to advertise in it as they wanted to stop rouge traders it would only cost £7.00 for a full A4 page. Next she asked for my bank details.
I would never give any details out over the phone.
Later that day a man rang saying he was from my local fire service and would i like to advertise again, I rang the poilce they took details and said it was a scam,

Carl Wootton.
Wootton Grave Tending