Silly question

[mickyj]

Seeing I’ve had a run around by the dealer that sold the Ford focus 2012 to my dad . They obviously did not do a diagnostic test in 2022 blamed the battery . And they serviced the focus January told me no issues with car and the battery they said was bad . Second dealer took a few days but did the diagnostic found the issue .
My silly question can I take the focus to a normal mechanic or can only a dealer service it . Service at dealer costs $380 plus whatever they say is wrong , which they seem to focus no pun lol on new tyres every service !
Sorry I’m tired of catching 2 buses that take 1 and 1/2 hours to collect the car.