You never know Matabele, you may snag a good used be-spoke one over your way which is most likely available over your way!
Even still if you want a new one, hopefully some of our European members should chime in to help you.

I'd even give Bradshaw a go - very interesting & super strong.
https://bradshawgunandrifle.com/rising-block-double-rifle

Also try Sabatti, as few of my BGR colleagues have them & have no issues.
https://www.sabatti.it/en/products/hunting

I've heard of AYA, perhaps worth a bell.
https://www.aya-fineguns.com/AYA-EXPRESS-RIFLE-MONOBLOCK.html