We have had a few of these machines from DAD and found them to be decent, similar feel to Beko.
I know DAD are having issues.
Are Solt a separate company or another DAD brand?
Who does their repairs and spares?
I have a few in stock still.
I would check ASWO for spares. I found them pretty comprehensive for parts diagrams and decent stock for other brands under the Vestel umbrella such as Electra
The telephone prefix 01759 for after sales support may suggest support is/was through the same service provider as Rangemaster and a few others, as they also use a call centre with that area code