Thank you for your responses.
I texted the number on the link at around 8.40. I received first response (after several automated instructions) around 10.45. I was asked a few security questions (that I'd already been asked / answered earlier. Then sent a link and told to enter certain digits of my password. I clicked the link but received a message 'unable to open this form'. I texted this information c.10.55. You are informed 'responses from this service are not immediate' but was slightly concerned at no further contact for over 15 mins, so I texted again at 11.10 to get an immediate, automated, response 'We've gone home for the day - we're here 7am-11pm Mon to Fri and 8 to 8 Sat.....etc!!
I mean, fair enough, the guy is entitled to go home at the end of his shift, but why answer a call at 10.45 if you're about to go home. OK, it's possible my query might have had a quick solution, but he could have said to me at the start 'I go home at 11.00 but let's see how far we can get'. Or sent a text at 11.00 saying 'sorry' personally, rather than just go home and leave this automated reply mid-conversation.
Customer service.....what customer service!! Sorry for the 'rant', none of this is your fault and I do thank you for trying to help. The end of the last message said '...we'll be back in touch tomorrow', so I wait and hope.