Aliexpress not controlling their dishonest sellers.

For long time I enjoyed the Aliexpress service. This is no more the case. The problem started with one of their sellers MiReDo's Store. The estimated delivery time for the goods was given 18/June--01/August. This didn't happen. Aliexpress asks you to try to sort the problem with the supplier and if not successful open a dispute and they step in. I contacted the supplier who asked to give it some time (reasonable with Covid mayhem). Eventually the supplier was asking me to check with our Post Office again and again. They pretend to be concerned and ready to do the right thing. This is a dirty tactics to keep you talking to them until your opening of dispute time lapses. So they got you! You cant open the dispute after 15 days and all the friendly talk ends. You can't write to Aliexpress about the ****, their website has no free email, only options, which are not applicable. I managed somehow to mail them my complaint, but received no reply. MiReDo's is a dishonest seller and Aliexpress should discipline them or take them off from their sellers list.