BA IT just doesn't work.

In the last couple of weeks I have had the following issues:
- could not change an OB redemption flight online (simple one-way)
- could not revalidate a change to a flight time without calling (IRROP)
- could not change an avios redemption online (call agent also initially demanded an offline charge)
- could not access any of my bookings in either the app or web. They were AWOL.
- could not change a seat allocation in F
- when changing a seat on a BA booking for AA metal the link to the AA site was invalid
- could not book a new OnBusiness booking for an AA flight. Could not compute taxes and fees.
- got incorrect fare display for using a GUF2 and booking with cash
- could not change a seat assignment after check-in had opened (despite not yet being checked in)
- got incorrect fare display on ba.com. Correctly priced the total fare once flights selected but individual sector prices shown were double what the final charge would have been.
- bank error in my favour for amount of Avios and nTP for GUF'd booking in F to the USA
- AI responses to me questioning a bad response to a complaint (3 times) resulted in 3 separate amounts of compensation Avios, despite never once asking for compensation.
- could not change API in a booking to the USA
- was asked for a Visa to enter Portugal when checking in at LGW (UK Passport in booking)

... actually, I'm sure there was more, but it is soooo tiring.