Have I messed up?

Durban

I am new to stoozing

I have a balance on MBNA card of around £5000 at 0 percent for about another year. I pay minimum amount and have the £5000 in a savings account. 

I have now taken the 0 percent fee offer of 21 months and MT around £7500 today and immediately did a BT of the same amount from another 0 percent card. 

I thought this would clear the MT 

However , I have now been reading that this possibly has jeopardised my 0
percent on my existing balance of £5000 and I should have done this with no balance outstanding 

is this correct and should I now pay off that £5000 asap or will my 0 percent still stand until the expiry of that offer 

Thank you 

molerat

You have £5000 outstanding at 0% for another 12 months

You did a MT for 21 months of £7500 at 0% fee - what APR ?

You then paid £7500 to the MBNA with a 0% BT from another card

MBNA will pay off anything that has been on a statement before it pays off the unstatemented interest bearing MT amount so will pay off the £5K 0% balance first plus £2500 off the MT leaving the remaining £5K MT outstanding and accruing interest.

Durban

Thank you. The APR is 6.9 percent. 

The remaining £5000 balance will then be accruing interest. 

I will pay this card off now and will learn my expensive lesson