Unknown interest on my Edgars Account

Interests was being charged to my account and would like it to be credited.

On the 13th March 2024, the lady I spoke to said she would arrange the credit to reflect on my April statement, which didn't happen. I called 19th April a lady I spoke to said my account was credited with the interest. I then said to her I would go into a store to sort it out. I opened my statement again and I called again, this guy explaining to me the benefits of the interests. He spoke for almost 20 minutes and i eventually put the phone down.

Please I cannot afford extra costs