They called me, and I didn't answer. When I called back, it rings once then hangs up.
They called me again the following week. I answered.
A lady called Dee, with a thick heavy foreign accent claimed that she was from a shares and stocks company and was wondering if I was interested in investing in their company. I wasn't, and I asked how she got my number, she very quickly ended the call then.
Clearly a money scamming opportunist.

I called back number (07) 3102 1353 rang once then gets disconnected automatically.

Answered the call. Female asking if I had solar panels. Replied yeah. Then asked if I had batteries linked to them. Then asked if quarter bill had dropped. Confronted Ove rather phone and she hung up