What was the origin of the avios? Did you get them flying or something else?

why did you use a Ta to make avios booking? Who are they and what service did they provide?

What was the original itinerary that was booked with avios? when you said something better was booked, what was it (another avios itinerary or something else?)

Aa you know, the rules surrounding the use of frequent flyer miles with all airlines are extremely strict and restrictive. There are a lot of roundabout ways some agents and brokers propose, often very openly. Unfortunately, many of them are egregiously contrary to programmes t&c on selling and bartering and if airlines catch any such activity, they strike with no mercy.

regardless of whether this is what happened here or not (and if you answer the questions above we’ll probably collectively guess quickly), it is clear that ba is suspecting fraud here. When this happens, all accounts involved are frozen pending investigations which can last days, weeks or months. Obvious mistakes get fixed within days but the more what investigators find looks like foul play, and the more complex the issues, the longer things can drag.

once an investigation has started there is nothing you can do to contact the team dealing with it, get updates, speed things up or whatever. Contacting the airline is a waste of time, and a letter to Santa would have had as much effect as a letter to the CEO. In essence the process is that when they are ready to speak, they will contact you either to ask questions or to tell you what they have found.

in the meantime you can only be patient and try not to get too worked up about it as you have no possibility to influence the process anyway. You can also hope your ta is a honest person who has played by the rules because unfortunately, if she didn’t, as she acted on your behalf, airlines will invariably hold you responsible for her actions if they are contrary to their terms in anyway.

if ba finds nothing wrong was done, the account will be magically unfrozen and avios re-appear. If they find that there has been wrong doing which unfortunately is more than a passing possibility, you would at best lose all those avios, possibly face a temporary or lifelong ban.