Grammar notes 38

のに can be appended after a plain verb in the form AのにB, meaning somewhat despite A, B occured.

When も is following a verb in て form, the meaning would be "even though". AてもB, even though A is true, B is also true. The same thing can be created by the copula でも.

While these seem simular, the if element in ても is stronger, and のに cannot be used in future context.

Suggestive form + とする indicates an action that is about to be interrupted.
昼食しようとする電話かけられた <--- example

何度も and any other simular constructions the 何度も part would indicate many.

かける would be sumular to 始める, but gives the impression of less control over the action and that it may be interrupted.