dozens of unwanted calls from this charity

I called back number (07) 3606 0827 reached voice mail of a charity company but did not say the name.

I called back number (07) 3606 0827 reached voice mail for a charity company but did not say from what company.

I keep getting missed calls from this number with no message. Tried to answer but just get dial tone. Been going going on for about a week. All different times. Very frustrating.

I called the number back and it stated that you could unsubscribe, but I didn't quite catch the name properly, it appears the consultant says email callingenquiries @ protophone.com The protophone bit is what I am not sure about, it was hard to hear it on the call. Almost deliberate so you can't unsubscribe

I called back number (07) 3606 0827 reached voice mail of a charity but did not say the name..