Answered no response have blocked

True to call back and was told that I couldn't access this number from my mobile

Spoke with a person with a accent, very difficult to understand.
Couldnt determine what company he represented but finally worked out he was trying to sell solar panels. Told him not interested. Nuisance call,

Wankers

Caller: unknown

Hangs up as soon as you answer
Obvious spam

rang twice, no message, doesnt call long enough to answer

Rang no. back but apparently not available from this service.

Caller: Unknown

Sounds like a spam