9kg Gas Bottle

I went in to Mica bramley , to fill my blue 9kg Cadac gas bottle. After my bottle was filled , it was put on a trolley with 2 other bottles , while been pushed back to the store the trolly fell over on a tar road and resulted in this bottle been dropped and been damaged - now remember this is a filled gas bottle. I addressed this with Greg the manager , he tells me he needs to log a claim with head office and walks away from me , did not ask me to come in and fill out details only after I probe did he say come in with an attitude - he is *********** and rude. I can’t believe the store allowed me to take home a gas bottle they was heavily dropped and damaged - this is a risk to me and my family. I believe the guys name is Gram - well mannered polite gent , he took my details and said he will chat to the owner. I need this bottle replaced as it’s a hazard and I don’t know if it’s safe to be used after taking such a hard knock.