Transfer Market Issue: Can Buy but Cannot Sell

Ive bought 150x 83 rated players as investments, and now i cant bid or buy players anymore. ive invested in almost every fifa, and sometimes when i bid on a lot of players i get shadow banned for max. 24 hours. This this its been 7 days.. Ive written to ea support every day the last 6 days, and no answer. can someone please help me