Leakage when filling espresso cup

Does the dealer know where these parts can be purchased? Or can the dealer get them and who is the dealer?

I get the same exact thing, which seals need to be replaced and how? The dealer I buy the cartridges/capsules from tells me its air trapped in the machine blocking water pressure, that needs to be released through the froth/steam wand. I make steam for a bit, but the problem still persists. This dealer is also an authorized Lavazza machine repair center, but as you can see they just come up with excuses and when I do send in the machine they can't find anything wrong with it. I'm willing to bet its the Lavazza cartridges/capsules that are defective, if you notice some are malformed, bottom filter on the cartridge a little off not covering whole bottom, I order in quantities of 200 and some batches I get work flawless and others just give me problems. I'm willing to bet its a problem at the Lavazza factories that make these cartridges.

Same thing. It gets a bit worse all the time. Now it also drips through the espresso spout when making hot water. The dealer says the seals need to be replaced.