Getting a second Shenzhen visa?

Hi all! I recently travelled from HK to Shenzhen just for one night this weekend just passed, and got the 5-day VOA with no trouble at the Lo Wu border (I have a British passport). My question is, if I want to return to Shenzhen again next weekend, am I able to get that same VOA again a second time? The current VOA I have expires on 13th July, and I'd be looking to go back to Shenzhen on perhaps the 14th or 15th. Will I be refused another 5 day VOA because I had one already so recently? Thanks for your help!