Who called from 2075800818

Got into hi-low bidding for electronics items from talksport radio, WHICH CAST ME £25 FOR THE FIVE TXTS I SENT them. The number for the hi-low bidding had about four or five digits - can't remember exactly. Since then I’ve been getting calls from 2075800818. I’ve never called or txted anyone apart from talksport radio from my computer. so how did 2075800818 get my number?  I've stopped bidding but still get calls from the said number.

I just received a call fro this number and as soon as I answered it there was no-one there.

Earlier this week, for the first time ever I texted Radio One on 81199, but otherwise I don't send text to anyone but friends.

I called it back but it's constantly engaged.

I got a call from this number at 13:10 today, yet I have never called or texted TalkSport Radio or Radio 1 before.
I picked up and it was engaged.
I hink this may be one of those numbers that charges you as soon as you pick up.
I just added it to my screened list.

I got a call today and as soon as I answered, they hang up