Ring app used 4.8gb of mobile data in two hours

Hi, has anyone had the ring app use massive amounts of mobile data when at home on WiFi? Last night I went to bed and didn't notice the app open on my phone in the background(I've done this before without a problem) but it was just on the dash board screen not live view or anything like that. I woke up to find it had used 4.8gb of my modile data(all of it) even though the phone was connected to WiFi. This is a little frustrating. I tried ringing Ring but got hung up on after an hour of being on hold with very little help. This has left me without data until my plan renews next month!