Tesla refunded customers who were overcharged up to $71,000 on new cars and gave them $200 to spend at its online store

• Tesla customers charged twice for new cars were refunded their money a week later, CNBC reported.
• Tesla offered the customers $200 in credit to spend at the company's online store.
• The buyers were left with bills of up to $142,000 and were charged for overdraft fees.

Tesla has refunded customers who were double-charged for new electric cars in mid-March, and has offered them $200 in credit at its online store, six people told CNBC on Wednesday.

Tesla refunded the money about a week after the customers told CNBC that Tesla had charged them twice without authorization and left them with bills of up to $142,000.

The customers said they received the money back on their double charges on or before April 1, but that they also had to pay for overdraft fees from their large bills. Elon Musk's car company sent the overcharged customers an email, which they shared with CNBC, that apologized and gave them $200 in credit. Tesla said the credit must be used in a single transaction, would expire on January 30, 2022, and couldn't be spent on Tesla Tequila.

Tesla didn't immediately respond to Insider's request for comment.

Three California Tesla customers first shared their stories with CNBC in March. CNBC's journalists reviewed their purchase agreements, correspondence with Tesla, and bank statements.

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Clark Peterson, Tom Slattery, and Christopher T. Lee initially told CNBC they had purchased Teslas ranging from $37,000, the price of a Model 3 sedan, to $71,000, the cost of a Model Y crossover SUV with premium features.

A former banking executive from North Carolina, who wanted to remain anonymous for privacy reasons, also told CNBC he was charged twice for a new Model Y costing about $54,000. Read more: DeepMind's cofounder partied with Elon Musk for his raucous 40th birthday party on the Orient Express, a new book revealed

These buyers all authorized the payment of their brand-new electric vehicles through ACH direct debit, but the next day found that the money had been taken from their account twice, meaning in total they had spent between $74,000 and $142,000 on the cars.

Now they've been refunded, they said Tesla customer service needs to improve.

Peterson told CNBC: "While happy to have the whole situation sorted, I still feel that the response time was inadequate. It took days before Tesla had any kind of response, and they were holding our significant funds the whole time. And it took them five minutes to take those funds from our account."

Another Tesla customer, Terry Oelschlaeger, told Insider he was also double-charged for a Tesla Model Y costing $53,993.70 on March 25. He shared his bank statement with Insider, which showed a duplicate charge for a new car.

Oelschlaeger said he phoned the company three times to complain and drove to a Tesla service center in California, where an employee told him the error had affected "many" buyers.

The company told him the refund would arrive in his bank account in one to three business days. He eventually received a payment in full from Tesla on March 31.