pls help Uk debt in Canada - CCA and harassment issues

I am looking to send a CCA to a DCA in the UK. We currently live in Canada and the Uk DCA has employed the help of a Canadian DCA who are being a nightmare - threatening phonecalls, phonecalls to my husbands employer etc.( its hubbys debt not mine) Today I requested a copy of the CCA and the man got VERY nasty and rude and insulting - said that was it no more Mr Nice Guy and we were now gonna get it - he then phoned my husbands employer giving just enough info for his emplyer to know he had debt issues etc but without disclosing enough to get himself in trouble.

I dont want to deal withthe canadian side of things ( they dont own the debt they work alongside the UK agency that now owns the debt) This man is threatening to take us to court in canada etc The debt was accrued in the Uk before we left last year through UK CC company.

I had sent a minimum payment letter / offer and according to this man today it has been refused. He is saying we cant conact the Uk branch as they just put us back to him - i dont believe this at all.

I want to ask for a copy of the CCA - so Ihave devised the letter to go to the UK company ( LInk Financial) but it says to send a postal order for £1 not a cheque as DCA can scan your signature onto a fake CCA. This worries me as I have already sent a personal cheque for the minimum payment in the past so they have the signature already! Also I can't get a £1 postal order here in canada so i dont know how to " pay" the £1.

any help greatly appreciated please - im desparate now

Tanah x