Poor service and issues post-repair

Took my car in for body work and a tail light replacement on Nov 28th and they had said the car would be ready in 8 days. They took an extra week despite misleading sms updates about the status of the repair. I had to call before finding out that my car was still in panel beating and not in the primer bay as informed in the sms.

They replaced the bumper fine but the paint job was bubbly and they hadn't covered the battery terminal with the flap(which I found while driving home by the wipers). Yet the car was marked as having passed QC.

When I picked up the car, the car had an airbag error that never existed before that and now they want to add that to my claim.

I will be going the legal route. I definitely would not recommend.