Hi there, hoping someone can help. šŸ˜¬

I have a 2007 polo GTI(stock) and Iā€™m having an issue with the power steering.
A couple of months ago I had the power steering intermittently cut out whilst driving. Itā€™s not my daily drive, so it could wait to get fixed. Just drove the Skoda in the mean time. Took it to my mechanic at the time who advised to take it into the dealership as he didnā€™t deal with auto electrics, specifically hydro/electrics.

Anyway. Fast forward to last week, had it in at the dealer service centre local to me(Nepean) and they advised that it needed a new power steering pump and fuse as the wiring in the pump was making the fuse pop? However, they wanted my left arm and first born child as payment... wasnā€™t going to happen. Lol. They also sent the car home with a dead battery(unsure if this is important)
I ordered a second hand pump and got my auto electrician to fit it for me yesterday.
Took it for a short drive it last night, low and behold, about 5 kms down the road, went to turn at a roundabout and The power steering cut out again. Pulled over to the side of the road, did a few hard turns of the wheel and it kicked back in. Drove home with no issues, but wondering what else could be causing this?
123000 on the clock, serviced every 10k and never had an issue with it until now.
Before I pay for another call out fee from the auto electrician, any ideas on what I could possibly do to try and fix this?
please and thank you! šŸ˜