だけど
dakedo

Conjunction

1. but; however; although

、電話でんわしてみたらしいんだけど、その電話でんわさき相手あいてってのが問題もんだいだったのよ。
de denwa shite mitara shiindakedo sono denwasakino aitette noga mondaidattanoyo.
And so it seems she tried phoning but it's who was on the other end of that phone that was the problem.