Is their a limit on purchased AC?

I recieved a confirmation of transaction from xbox I purchased the 10300 ac pack but I didn't get it.

the second transaction for 1000 ac did go through gonna try another 10300 transaction

So first 10300 transaction today for 99.99 didn't go through (took money from account though) second purchase for 1k (9.99) did go through thirds for 10300 did go through

still 4 hours later havn't recieved the ac from my first order