User Activity

all the sub catagories in the product i sell have been deleted today without warning, has anybody else seen this ?
had nothing but problems since i was force into seller hub, now i cannot access any of my active or sold listings and i can'tg get hold of ebsy either, anybody know what has gone wrong with this hopeless feature ??
for months i have been getting " sorry there is an error " when trying to save a new seller anybody else getting this ??