Ask them why you have to wait for THEIR approval before you get baptised. Ask them why you are not baptised in the Father, Son & Holy Spirit, but into the organisation.
Ask them why they show hatred towards disfellowshipped people.
Ask them why they teach those who die at Armageddon will not be ressurected, when Rev 19 shows only the beasts being thrown into the "firey lake".
Ask them why you have to go through the Organisation to get to CHRIST, when you should go to Christ directly.
Ask them why the WT was in bed with the UN. Ask them why the GB abandoned the flock to the WT. Ask them why so many doctrinal flip flops and changes.
Ask them why Paul is so important. Ask them why you must obey each and every law THEY make up. Ask them why are they in the seat of Moses? Ask them if Jesus did not warn against those who seat themselves there. Also, ask them if Jesus did not warn against those who preach "the due time has approached" Luke 21:8
And dont take their bullshit, make them answer ONLY from their bible. Not from the Watchtower twisted literature, which isnt needed at all. If they insist on using their literature, then im sure you can find plenty of disgusting articles from older magazines which are STILL CURRENT LIGHT!
That should get rid of them, or hopefully set one or both of them on the path out of that twisted and adulterous system.