Hi Kike....
Might be worth having a read over our service and maintenance guide as there is no reason why anything should be filthy
It does sound like some things that should have been done may have been missed/skipped. FWIW, this is what we do:
Routine service includes:
- Disassembly, inspection and lubrication of group, wands and steam and hot water valves. Replacement of wear components as required
- Descale (if required)
- Electrical safety and pressure checks. Replacement of pressure and/or electrical components as required
- Repairs as required
- Cleaning of your machine