Caller: Debt Collectors

I received a missed call from this number then calls from an unknown number, which I presume is the same company. I don’t understand why they’re calling me as I don’t have outstanding debts.
I will not be answering calls from and blocking numbers beginning with 07 3144 or unknown numbers.

I called back the number (07) 3144 6399, rang and got disconnected automatically

Rang and hung up probably same as above

Rang both my husbands mobile and mine asking for someone with the same last name as us. No idea what they want, but they’ve rung a few times now.
I assume they are randomly ringing people with the same last name as someone with a debt - or it’s a scam. Either way- IGNORE AND BLOCK.

Dept collections

I rang once and got disconnected