I recently bought some coins to run ads on TikTok, I bought £89.99 of them. I then went to run my ads and found out I was only given the equivalent of £60 of advertising. I then cancelled these ads after they had used £13 and was refunded £8 of coins, how does this math add up. Where did the other £47 of my coins I put into the ad go? There is no way of contacting TikTok so I am bringing it up with my bank so get the payment refunded.