こととて

Since A, B is unavoidable, and usually used in formal sentances like:[引越「ひっこし」]してきたばかりで, あたりの[様子「ようす」]もわからないこととて, どうぞよろしくお[愿「つつし」]いい たします。I have just moved here and (therefore) don't know the local ways, so I'm asking for your cooperation and kindness.