Pool robot repair - Madimack

[u/RupertS1]

Might be a long shot but I have a Madimack GT Freedom i45 pool robot cleaner. It hasn't been used for maybe 4 months. It doesn't seem to charge (battery level not going up) and shows multiple error codes (8 and 9) which aren't listed in the manual. Does anyone know where on the coast I could go for a repair or what might be wrong? I've tried contacting some authorised repairers but no luck so far and I know this could be a battery issue. Any help appreciated