So many charities but which one to contribute to?

I was looking around for a charity to donate to in respect of the Ukrainian appeals. I saw a charity with an address local enough to me here in Blackrock. They have a "donate now" button on their website. However I wanted to send them a cheque (use up the last of my Ulster Bank cheques). I contacted them through their Facebook page to see if they would take a cheque. No response. to my message.
I waited a few days and then I decided to contact them through their online form on their web page. No response to this either. I then sent them an email. No response.

I appreciate that charities may be run by voluntary staff but surely they must have someone to monitor their online prescence and contact us details?
 
I'm a long-standing Trocaire supporter who is seriously considering stopping my standing order over its recent political antics (as reported in The Times on Monday).

 
I'm a long-standing Trocaire supporter who is seriously considering stopping my standing order over its recent political antics (as reported in The Times on Monday).

Trócaire have been overtly political since the 1970s, e.g. involvement in El Salvador.

Many churches and charities are political in some shape or form.
 

Probably someone trying to figure out how to answer when they don't know what a 'cheque' is lol