Scam?

Description

Hello, I got sent £10 today from an unknown person with the note as Tara IPTV, currently not a clue what that’s for no idea what it is and didn’t expect any payments coming to me. I contacted seller to question it, they said hi I’m so and so’s sister I am paying for the IPTV is this correct, I said you’ve been given the wrong email address as I have no idea what this is, they ask could I send it back I ofc played on April fools and said no it’s mine now got a sob story back and then replied with April’s fool, I’ll send it back now, they requested a refund so I sent the £10 back, then just after midnight tonight I receive a refund from the same person sending me £10 again so I once again questioned why they sent me £10 they said “have I? I’m not very good with technology, you can tell I’m blonde” very cliche so I said if your trying to scam me do one, they replied “Why would I try scam you on PayPal, I genuinely thought I’d put it back in my bank account I’m so sorry, you use the money it’s only a tenner I can do without anymore hassle right now” and I’ve now left it at that the money is now sitting in my balance, what should I do? Is this a scam?