Apple support called today the 20th as promised and bang on the time we agreed. After explaining all in the previous call - I expected them to be familiar with the problem. Silly me. So I went throught the scenario again. Lots of long phone holds. Then was advised I would be contacted again within 48 hours and the issue had been escalated.
A couple of hours later I recived email and text updates. Firstly that my watch was now being worked on. Followed by another advising that a replacement was being arranged for sending to me
My watch was mint. I requested a replacement battery as the max charge rate was 80%. I paid the fee asvised for a new battery and returned it in the shipping box supplied by Apple.
Clearly something went wrong since they logged receiving it on the 8th. Its now the 20th - and I await.
I am no expert - but having backed up my watch data to my Apple account - that it will just be a restore to the replacement. Just a little worried there may be an issue because I expect a different serial number on the replacemnt and wonder if it will impact a restore. I will share my experience if I receive the replacement and attempt to get back up and running.
Update whilst typing. Just received an email from Apple advising a replacement has been sent to me - with a new Serial and IMEI numbers. And a letter explaining!