02070971813

Third attempted call from this number in 7 days, previous 2 hung up before I could answer in under a minute.
The caller said his name was Daniel, saying he was calling from London.  He had an almost indecipherable South Asian accent.
I asked him who I was, and he couldn't tell me.
I asked why he was calling me and eventually ascertained that he was calling from a company called Phone House on behalf of a third party.
I repeatedly insisted that he tell me who that third party was.  He wouldn't, clearing the call down when I asked for the fifth time.

Caller Michael claiming to be from "your mobile network, 3G". 3 Customer Service and 3rd parties are usually very well spoken with Indian or British accents; this guy did not make the standard. Asked about quality of 5G services then proceeded to standard scammy script. Offered "40% reduction on your existing contract". I politely closed the call, reported to spam reporting by text.

Copied from 02 website:
You can report scam calls received on your mobile phone to your provider by texting the word ‘call’ followed by the phone number to 7726 on an iPhone. If you have an Android, text the word ‘call’ to 7726. You’ll then receive a message asking you for the scam number.

Scam text messages can be reported by forwarding them to 7726.